title: Asthma: epidemiology, etiology and risk factors.
authors.affiliation: Department of Pediatric Respirology, Hospital for Sick Children, University of Toronto, Toronto, Ont.
authors.forename: Padmaja
authors.initials: P
authors.lastname: Subbarao
authors.forename: Piush J
authors.initials: PJ
authors.lastname: Mandhane
authors.forename: Malcolm R
authors.initials: MR
authors.lastname: Sears
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D001249:Asthma / Q000453:epidemiology* / Q000209:etiology* / Q000503:physiopathology; D002648:Child; D003430:Cross-Sectional Studies; D004781:Environmental Exposure / Q000009:adverse effects*; D005260:Female; D005500:Follow-Up Studies; D020022:Genetic Predisposition to Disease / Q000453:epidemiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D016273:Occupational Exposure / Q000009:adverse effects; D009864:Ontario / Q000453:epidemiology; D015995:Prevalence; D012008:Recurrence; D012129:Respiratory Function Tests; D012307:Risk Factors; D012720:Severity of Illness Index; D017678:Sex Distribution; D012907:Smoking / Q000009:adverse effects; D055815:Young Adult