Additional Resources
1Centers for Disease Control and Prevention. Most Recent Asthma Data. Accessed 27 March 2017.
2Centers for Disease Control and Prevention. Most Recent Asthma Data. February 2017. Available at Centers for Disease Control and Prevention. Most Recent Asthma Data. Accessed 27 March 2017.
3Centers for Disease Control and Prevention. Health Care Coverage among Children. Available at Centers for Disease Control and Prevention. Health Care Coverage among Children. Accessed 27 March 2017.
4Centers for Disease Control and Prevention. Asthma’s Impact on the Nation: Data from the CDC National Asthma Control Program. Available at Centers for Disease Control and Prevention. Asthma’s Impact on the Nation: Data from the CDC National Asthma Control Program. Accessed 18 April 2017.
5Centers for Disease Control and Prevention. Most Recent Asthma Data. February 2017. Available at Centers for Disease Control and Prevention. Most Recent Asthma Data. Accessed 27 March 2017.
6Centers for Disease Control and Prevention. Most Recent Asthma Data. February 2017. Available at Centers for Disease Control and Prevention. Most Recent Asthma Data. Accessed 27 March 2017.
7Centers for Disease Control and Prevention. Asthma-related Missed Schools Days among Children aged 5-17 years. Updated October 2015. Available at Centers for Disease Control and Prevention. Asthma-related Missed Schools Days among Children aged 5-17 years. Accessed 18 April 2017.
8Centers for Disease Control and Prevention. Asthma’s Impact on the Nation: Data from the CDC National Asthma Control Program. Available at Centers for Disease Control and Prevention. Asthma’s Impact on the Nation: Data from the CDC National Asthma Control Program. Accessed 18 April 2017.
9Jang J, Gary Chan KC, Huang H, Sullivan SD. Trends in cost and outcomes among adult and pediatric patients with asthma: 2000–2009. Annals of Allergy, Asthma & Immunology. 2013;111(6):516-22.
10American Lung Association. State Medicaid Coverage for Controller Medications. Available at American Lung Association. State Medicaid Coverage for Controller Medications. Accessed 3 October 2016.
11National Institutes of Health. National Heart Lung and Blood Institute. Asthma NIH Publication No. 12-5075. September 2012. Available at National Institutes of Health. National Heart Lung and Blood Institute. Asthma NIH Publication No. 12-5075.
12National Institutes of Health. National Heart Lung and Blood Institute. Asthma NIH Publication No. 12-5075. September 2012. Available at National Institutes of Health. National Heart Lung and Blood Institute. Asthma NIH Publication No. 12-5075.
13National Institutes of Health. National Heart Lung and Blood Institute. Asthma NIH Publication No. 12-5075. September 2012. Available at National Institutes of Health. National Heart Lung and Blood Institute. Asthma NIH Publication No. 12-5075.
14Asthma Community Network. Collaborating for Better Care: Strategies for Successful Partnerships Between Health Plans and Asthma Programs. Available at Asthma Community Network. Collaborating for Better Care: Strategies for Successful Partnerships Between Health Plans and Asthma Programs. Accessed 18 January 2017.
15Asthma Community Network. Collaborating for Better Care: Strategies for Successful Partnerships Between Health Plans and Asthma Programs. Available at Asthma Community Network. Collaborating for Better Care: Strategies for Successful Partnerships Between Health Plans and Asthma Programs. Accessed 18 January 2017.
16Rossiter LF, Whitehurst-Cook MY, Small RE, et al. The impact of disease management on outcomes and cost of care: a study of low-income asthma patients. Inquiry. 2000;37(2):188-202.
17Rossiter LF, Whitehurst-Cook MY, Small RE, et al. The impact of disease management on outcomes and cost of care: a study of low-income asthma patients. Inquiry. 2000;37(2):188-202.
18Asthma Community Network. Collaborating for Better Care: Strategies for Successful Partnerships Between Health Plans and Asthma Programs. Available at Asthma Community Network. Collaborating for Better Care: Strategies for Successful Partnerships Between Health Plans and Asthma Programs. Accessed 18 January 2017.
19Cloutier MM, Grosse SD, Wakefield DB, Nurmagambetov T, Brown CM. The economic impact of an urban asthma management program. American Journal of Managed Care. 2009; 15(6): 345–51.
20Cloutier MM et al., Use of asthma guidelines by primary care providers to reduce hospitalizations and emergency department visits in poor, minority, urban children. Journal of Pediatrics. 2005; 146(5): 591–7.
21Rossiter LF, Whitehurst-Cook MY, Small RE, et al. The impact of disease management on outcomes and cost of care: a study of low-income asthma patients. Inquiry. 2000;37(2):188-202.
22Asthma Community Network. Collaborating for Better Care: Strategies for Successful Partnerships Between Health Plans and Asthma Programs. Available at Asthma Community Network. Collaborating for Better Care: Strategies for Successful Partnerships Between Health Plans and Asthma Programs. Accessed 18 January 2017.
23Cloutier MM, Grosse SD, Wakefield DB, Nurmagambetov T, Brown CM. The economic impact of an urban asthma management program. American Journal of Managed Care. 2009; 15(6): 345–51.
24Cloutier MM et al., Use of asthma guidelines by primary care providers to reduce hospitalizations and emergency department visits in poor, minority, urban children. Journal of Pediatrics. 2005; 146(5): 591–7.
25Kattan M, Crain EF, Steinbach S, et al. A randomized clinical trial of clinician feedback to improve quality of care for inner-city children with asthma. Pediatrics. 2006;117(6):e1095-103
26Cabana MD, et al. Impact of physician asthma care education on patient outcomes. Pediatrics. 2006;117(6):2149-57.
27Szefler S, Gergen P, Mitchell M, Morgan M. Achieving asthma control in the inner city: Do the National Institutes of Health Asthma Guidelines really work? Journal of Allergy and Clinical Immunology. 2010; 125(3):521–526.
28Szefler SJ, et al. Management of asthma based on exhaled nitric oxide in addition to guideline-based treatment for inner-city adolescents and young adults: a randomised controlled trial. Lancet. 2008; 372(9643):1065-72.
29Rossiter LF, Whitehurst-Cook MY, Small RE, et al. The impact of disease management on outcomes and cost of care: a study of low-income asthma patients. Inquiry. 2000;37(2):188-202.
30Asthma Community Network. Collaborating for Better Care: Strategies for Successful Partnerships Between Health Plans and Asthma Programs. Available at Asthma Community Network. Collaborating for Better Care: Strategies for Successful Partnerships Between Health Plans and Asthma Programs. Accessed 18 January 2017.
31Cloutier MM, Grosse SD, Wakefield DB, Nurmagambetov T, Brown CM. The economic impact of an urban asthma management program. American Journal of Managed Care. 2009; 15(6): 345–51.
32Asthma Community Network. Collaborating for Better Care: Strategies for Successful Partnerships Between Health Plans and Asthma Programs. Available at Asthma Community Network. Collaborating for Better Care: Strategies for Successful Partnerships Between Health Plans and Asthma Programs. Accessed 18 January 2017.
33Rossiter LF, Whitehurst-Cook MY, Small RE, et al. The impact of disease management on outcomes and cost of care: a study of low-income asthma patients. Inquiry. 2000;37(2):188-202.
34Cloutier MM, Grosse SD, Wakefield DB, Nurmagambetov T, Brown CM. The economic impact of an urban asthma management program. American Journal of Managed Care. 2009; 15(6): 345–51.
35Cloutier MM et al., Use of asthma guidelines by primary care providers to reduce hospitalizations and emergency department visits in poor, minority, urban children. Journal of Pediatrics. 2005; 146(5): 591–7.
36Kattan M, Crain EF, Steinbach S, et al. A randomized clinical trial of clinician feedback to improve quality of care for inner-city children with asthma. Pediatrics. 2006;117(6):e1095-103
37Cabana MD, et al. Impact of physician asthma care education on patient outcomes. Pediatrics. 2006;117(6):2149-57.
38Szefler S, Gergen P, Mitchell M, Morgan M. Achieving asthma control in the inner city: Do the National Institutes of Health Asthma Guidelines really work? Journal of Allergy and Clinical Immunology. 2010; 125(3):521–526.
39Szefler SJ, et al. Management of asthma based on exhaled nitric oxide in addition to guideline-based treatment for inner-city adolescents and young adults: a randomised controlled trial. Lancet. 2008; 372(9643):1065-72.
40American Lung Association. State Medicaid Coverage for Controller Medications. Available at American Lung Association. State Medicaid Coverage for Controller Medications. Accessed 3 October 2016.
41Rossiter LF, Whitehurst-Cook MY, Small RE, et al. The impact of disease management on outcomes and cost of care: a study of low-income asthma patients. Inquiry. 2000;37(2):188-202.
42Rust G, Zhang S, Reynolds J. Inhaled corticosteroid adherence and emergency department utilization among Medicaid-enrolled children with asthma. Journal of Asthma. 2013; 50(7): 769–775.
43Berger Z, Kimbrough W, Gillespie C, et al. Lower copay and oral administration: predictors of first-fill adherence to new asthma prescriptions. American Health & Drug Benefits. 2009;2(4):174–80
44Campbell JD, Allen-Ramey F, Sajjan SG, Maiese EM, Sullivan SD. Increasing pharmaceutical copayments: impact on asthma medication utilization and outcomes. American Journal of Managed Care. 2011;17(10):703–10
45Karaca-Mandic P, Jena AB, Joyce GF, Goldman DP. Out-of-pocket medication costs and use of medications and health care services among children with asthma. JAMA. 2012;307(12):1284-91.
46Viswanathan M, Golin CE, Jones CD, et al. Interventions to improve adherence to self-administered medications for chronic diseases in the United States: a systematic review. Annals of Internal Medicine. 2012;157(11):785-95.
47Wilson SR, Strub P, Buist AS, et al. Shared treatment decision making improves adherence and outcomes in poorly controlled asthma. American Journal of Respiratory and Critical Care Medicine. 2010;181:566-77.
48Karaca-Mandic P, Jena AB, Joyce GF, Goldman DP. Out-of-pocket medication costs and use of medications and health care services among children with asthma. JAMA. 2012;307(12):1284-91.
49Berger Z, Kimbrough W, Gillespie C, Boscarino JA, Wood GC, Qian Z, Jones JB, Shah NR. Lower copay and oral administration: predictors of first-fill adherence to new asthma prescriptions. American Health & Drug Benefits. 2009;2(4):174–80.
50Campbell JD, Allen-Ramey F, Sajjan SG, Maiese EM, Sullivan SD. Increasing pharmaceutical copayments: impact on asthma medication utilization and outcomes. American Journal of Managed Care 2011;17(10):703–10
51Viswanathan M, Golin CE, Jones CD, et al. Interventions to improve adherence to self-administered medications for chronic diseases in the United States: a systematic review. Annals of Internal Medicine. 2012;157(11):785-95.
52Wilson SR, Strub P, Buist AS, et al. Shared treatment decision making improves adherence and outcomes in poorly controlled asthma. American Journal of Respiratory and Critical Care Medicine. 2010;181:566-77.
53Viswanathan M, Golin CE, Jones CD, et al. Interventions to improve adherence to self-administered medications for chronic diseases in the United States: a systematic review. Annals of Internal Medicine. 2012;157(11):785-95.
54Okelo SO, Butz AM, Sharma R, et al. Interventions to modify health care provider adherence to asthma guidelines: a systematic review. Pediatrics. 2013; 132(3):517-34.
55Centers for Medicare and Medicaid Services. Medicare Learning Network. Chronic Care Management Services. Available at Centers for Medicare and Medicaid Services. Medicare Learning Network. Chronic Care Management Services. Accessed 24 April 2017.
56Okelo SO, Butz AM, Sharma R, et al. Interventions to modify health care provider adherence to asthma guidelines: a systematic review. Pediatrics. 2013; 132(3):517-34.
57American Lung Association. State Medicaid Coverage for Self-Management Education. Available from American Lung Association. State Medicaid Coverage for Self-Management Education. Accessed 3 October 2016.
58Centers for Disease Control and Prevention. National Asthma Control Program. Asthma Self-Management Education and Environmental Management: Approaches to Enhancing Reimbursement. Available at Centers for Disease Control and Prevention. National Asthma Control Program. Asthma Self-Management Education and Environmental Management: Approaches to Enhancing Reimbursement.
59Gardner A, Kaplan B, Brown W, et al. National standards for asthma self-management education. Annals of Allergy, Asthma, & Immunology. 2015 Mar:114(3):178-186.
60Markus AR, Andres E, Gerstein MT, Lyons VS. Medicaid payment innovations to financially sustain comprehensive childhood asthma management programs at federally qualified health centers. Journal of Allergy and Asthma Educators. June 2013. DOI: 10.1177/2150129713486479.
61Markus AR, Andres E, Gerstein MT, Lyons VS. Medicaid payment innovations to financially sustain comprehensive childhood asthma management programs at federally qualified health centers. Journal of Allergy and Asthma Educators. June 2013. DOI: 10.1177/2150129713486479.
62Markus AR, Andres E, Gerstein MT, Lyons VS. Medicaid payment innovations to financially sustain comprehensive childhood asthma management programs at federally qualified health centers. Journal of Allergy and Asthma Educators. June 2013. DOI: 10.1177/2150129713486479.
63America’s Health Insurance Plans. Next Generation Asthma Care: Integrating Clinical and Environmental Strategies to Improve Asthma Outcomes. Available at America’s Health Insurance Plans. Next Generation Asthma Care: Integrating Clinical and Environmental Strategies to Improve Asthma Outcomes. Accessed 17 January 2017.
64Markus AR, Andres E, Gerstein MT, Lyons VS. Medicaid payment innovations to financially sustain comprehensive childhood asthma management programs at federally qualified health centers. Journal of Allergy and Asthma Educators. June 2013. DOI: 10.1177/2150129713486479.
65America’s Health Insurance Plans. Next Generation Asthma Care: Integrating Clinical and Environmental Strategies to Improve Asthma Outcomes. Available at America’s Health Insurance Plans. Next Generation Asthma Care: Integrating Clinical and Environmental Strategies to Improve Asthma Outcomes. Accessed 17 January 2017.
66Viswanathan M, Golin CE, Jones CD, et al. Interventions to improve adherence to self-administered medications for chronic diseases in the United States: a systematic review. Annals of Internal Medicine. 2012;157(11):785-95.
67Hsu J, Wilhelm N, Lewis L, Herman E. Economic evidence for U.S. asthma self-management education and home-based interventions. Journal of Allergy and Clinical Immunology: In Practice. 2016. DOI: 10.1016/j.jaip.2016.05.012.
68Gardner A, Kaplan B, Brown W, et al. National standards for asthma self-management education. Annals of Allergy, Asthma, & Immunology. 2015 Mar:114(3):178-186.
69Hsu J, Wilhelm N, Lewis L, Herman E. Economic evidence for U.S. asthma self-management education and home-based interventions. Journal of Allergy and Clinical Immunology: In Practice. 2016. DOI: 10.1016/j.jaip.2016.05.012.
70National Asthma Educator Certification Board Frequently Asked Questions. Available at National Asthma Educator Certification Board Frequently Asked Questions. Accessed 17 January 2017.
71Markus AR, Andres E, Gerstein MT, Lyons VS. Medicaid payment innovations to financially sustain comprehensive childhood asthma management programs at federally qualified health centers. Journal of Allergy and Asthma Educators. 2013 Jun. DOI: 10.1177/2150129713486479
72Childhood Asthma Leadership Coalition. Pathways to Medicaid Reimbursement for Pediatric Asthma Services. Available at Childhood Asthma Leadership Coalition. Pathways to Medicaid Reimbursement for Pediatric Asthma Services. Accessed 3 October 2016.
73Centers for Disease Control and Prevention. National Asthma Control Program. Asthma Self-Management Education and Environmental Management: Approaches to Enhancing Reimbursement. Available at Centers for Disease Control and Prevention. National Asthma Control Program. Asthma Self-Management Education and Environmental Management: Approaches to Enhancing Reimbursement.
74Markus AR, Andres E, Gerstein MT, Lyons VS. Medicaid payment innovations to financially sustain comprehensive childhood asthma management programs at federally qualified health centers. Journal of Allergy and Asthma Educators. 2013 Jun. DOI: 10.1177/2150129713486479.
75America’s Health Insurance Plans. Next Generation Asthma Care: Integrating Clinical and Environmental Strategies to Improve Asthma Outcomes. Available at America’s Health Insurance Plans. Next Generation Asthma Care: Integrating Clinical and Environmental Strategies to Improve Asthma Outcomes. Accessed 17 January 2017.
76Hsu J, Wilhelm N, Lewis L, Herman E. Economic evidence for U.S. asthma self-management education and home-based interventions. Journal of Allergy and Clinical Immunology: In Practice. 2016. DOI: 10.1016/j.jaip.2016.05.012.
77Centers for Disease Control and Prevention. National Asthma Control Program. Asthma Self-Management Education and Environmental Management: Approaches to Enhancing Reimbursement. Available at Centers for Disease Control and Prevention. National Asthma Control Program. Asthma Self-Management Education and Environmental Management: Approaches to Enhancing Reimbursement.
78Markus AR, Andres E, Gerstein MT, Lyons VS. Medicaid payment innovations to financially sustain comprehensive childhood asthma management programs at federally qualified health centers. Journal of Allergy and Asthma Educators. 2013 Jun. DOI: 10.1177/2150129713486479.
79America’s Health Insurance Plans. Next Generation Asthma Care: Integrating Clinical and Environmental Strategies to Improve Asthma Outcomes. Available at America’s Health Insurance Plans. Next Generation Asthma Care: Integrating Clinical and Environmental Strategies to Improve Asthma Outcomes. Accessed 17 January 2017.
80Hsu J, Wilhelm N, Lewis L, Herman E. Economic evidence for U.S. asthma self-management education and home-based interventions. Journal of Allergy and Clinical Immunology: In Practice. 2016. DOI: 10.1016/j.jaip.2016.05.012.
81Hsu J, Wilhelm N, Lewis L, Herman E. Economic evidence for U.S. asthma self-management education and home-based interventions. Journal of Allergy and Clinical Immunology: In Practice. 2016. DOI: 10.1016/j.jaip.2016.05.012.
82Viswanathan M, Golin CE, Jones CD, et al. Interventions to improve adherence to self-administered medications for chronic diseases in the United States: a systematic review. Annals of Internal Medicine. 2012;157(11):785-95.
83Pinnock H, et al. Implementing supported self-management for asthma: a systematic review and suggested hierarchy of evidence of implementation studies. BioMed Central. 2015;1;13:127.
84Okelo SO, Butz AM, Sharma R, et al. Interventions to modify health care provider adherence to asthma guidelines: a systematic review. Pediatrics. 2013;132(3):517-34.
85American Lung Association. State Medicaid Coverage for Home Visits. Updated June 30,2016. Available at American Lung Association. State Medicaid Coverage for Home Visits.
86Markus AR, Andres E, Gerstein MT, Lyons VS. Medicaid payment innovations to financially sustain comprehensive childhood asthma management programs at federally qualified health centers. Journal of Allergy and Asthma Educators. 2013 Jun. DOI: 10.1177/2150129713486479.
87Markus AR, Andres E, Gerstein MT, Lyons VS. Medicaid payment innovations to financially sustain comprehensive childhood asthma management programs at federally qualified health centers. Journal of Allergy and Asthma Educators. 2013 Jun. DOI: 10.1177/2150129713486479.
88America’s Health Insurance Plans. Next Generation Asthma Care: Integrating Clinical and Environmental Strategies to Improve Asthma Outcomes. Available at America’s Health Insurance Plans. Next Generation Asthma Care: Integrating Clinical and Environmental Strategies to Improve Asthma Outcomes. Accessed 17 January 2017.
89Hsu J, Wilhelm N, Lewis L, Herman E. Economic evidence for U.S. asthma self-management education and home-based interventions. Journal of Allergy and Clinical Immunology: In Practice. 2016. DOI: 10.1016/j.jaip.2016.05.012.
90Markus AR, Andres E, Gerstein MT, Lyons VS. Medicaid payment innovations to financially sustain comprehensive childhood asthma management programs at federally qualified health centers. Journal of Allergy and Asthma Educators. 2013 Jun. DOI: 10.1177/2150129713486479.
91America’s Health Insurance Plans. Next Generation Asthma Care: Integrating Clinical and Environmental Strategies to Improve Asthma Outcomes. Available at America’s Health Insurance Plans. Next Generation Asthma Care: Integrating Clinical and Environmental Strategies to Improve Asthma Outcomes. Accessed 17 January 2017.
92Hsu J, Wilhelm N, Lewis L, Herman E. Economic evidence for U.S. asthma self-management education and home-based interventions. Journal of Allergy and Clinical Immunology: In Practice. 2016. DOI: 10.1016/j.jaip.2016.05.012.
93Hsu J, Wilhelm N, Lewis L, Herman E. Economic evidence for U.S. asthma self-management education and home-based interventions. Journal of Allergy and Clinical Immunology: In Practice. 2016. DOI: 10.1016/j.jaip.2016.05.012.
94Environmental Protection Agency. Collaborating for Better Care: Strategies for Successful Partnerships Between Health Plans and Asthma Programs. Available at Environmental Protection Agency. Collaborating for Better Care: Strategies for Successful Partnerships Between Health Plans and Asthma Programs. Accessed 17 January 2017.
95Reddy AL, Gomez M, Dixon SL. An evaluation of a state-funded healthy homes intervention on asthma outcomes in adults and children. Journal of Public Health Management & Practice. 23(2):219-228, March/April 2017.
96Gomez M, Reddy A, Dixon SL, et al. A cost-benefit analysis of a state-funded healthy homes program for residents with asthma: findings from the New York State Healthy Neighborhoods Program. Journal of Public Health Management & Practice. 23(2):229-238, March/April 2017.
97Nurmagambetov TA, Barnett SBL, Jacob V, Chattopadhyay SK, Hopkins DP, Crocker DD, et al. Economic value of home-based, multi-trigger, multicomponent interventions with an environmental focus for reducing asthma morbidity: a Community Guide systematic review. American Journal of Preventive Medicine. 2011;41(2S1):S33–S47.
98Hsu J, Wilhelm N, Lewis L, Herman E. Economic evidence for U.S. asthma self-management education and home-based interventions. Journal of Allergy and Clinical Immunology: In Practice. 2016. DOI: 10.1016/j.jaip.2016.05.012.
99National Asthma Educator Certification Board Frequently Asked Questions. Available at National Asthma Educator Certification Board Frequently Asked Questions. Accessed 17 January 2017.
100Markus AR, Andres E, Gerstein MT, Lyons VS. Medicaid payment innovations to financially sustain comprehensive childhood asthma management programs at federally qualified health centers. Journal of Allergy and Asthma Educators. 2013 Jun. DOI: 10.1177/2150129713486479.
101Childhood Asthma Leadership Coalition. Pathways to Medicaid Reimbursement for Pediatric Asthma Services. Available at Childhood Asthma Leadership Coalition. Pathways to Medicaid Reimbursement for Pediatric Asthma Services. Accessed 3 October 2016.
102Markus AR, Andres E, Gerstein MT, Lyons VS. Medicaid payment innovations to financially sustain comprehensive childhood asthma management programs at federally qualified health centers. Journal of Allergy and Asthma Educators. June 2013. DOI: 10.1177/2150129713486479.
103America’s Health Insurance Plans. Next Generation Asthma Care: Integrating Clinical and Environmental Strategies to Improve Asthma Outcomes. Available at America’s Health Insurance Plans. Next Generation Asthma Care: Integrating Clinical and Environmental Strategies to Improve Asthma Outcomes. Accessed 17 January 2017.
104Hsu J, Wilhelm N, Lewis L, Herman E. Economic evidence for U.S. asthma self-management education and home-based interventions. Journal of Allergy and Clinical Immunology: In Practice. 2016. DOI: 10.1016/j.jaip.2016.05.012.
105America’s Health Insurance Plans. Next Generation Asthma Care: Integrating Clinical and Environmental Strategies to Improve Asthma Outcomes. Available at America’s Health Insurance Plans. Next Generation Asthma Care: Integrating Clinical and Environmental Strategies to Improve Asthma Outcomes. Accessed 17 January 2017.
106Hsu J, Wilhelm N, Lewis L, Herman E. Economic evidence for U.S. asthma self-management education and home-based interventions. Journal of Allergy and Clinical Immunology: In Practice. 2016. DOI: 10.1016/j.jaip.2016.05.012.
107Hsu J, Wilhelm N, Lewis L, Herman E. Economic evidence for U.S. asthma self-management education and home-based interventions. Journal of Allergy and Clinical Immunology: In Practice. 2016. DOI: 10.1016/j.jaip.2016.05.012.
108Nurmagambetov TA, Barnett SBL, Jacob V, Chattopadhyay SK, Hopkins DP, Crocker DD, et al. Economic value of home-based, multi-trigger, multicomponent interventions with an environmental focus for reducing asthma morbidity: a Community Guide systematic review. American Journal of Preventive Medicine. 2011;41(2S1):S33–S47.