A multifaceted, home based, environmental intervention modestly reduced asthma morbidity in children with atopic asthma Morgan WJ, Crain EF, Gruchalla RS, et al. Results of a home-based environmental intervention among urban children with asthma. N Engl J Med 2004;351:1068-80. Clinical impact ratings Paediatrics wwwwwwq Respirology wwwwwwq Immunology wwwwwqq Allergy and Immunology wwwwwqq