title: Understanding the asthma epidemic: can twin studies help?
authors: Wendy
authors: W
authors: Cozen
authors: Manuel A R
authors: MA
authors: Ferreira
mesh_terms: D001249:Asthma / Q000453:epidemiology* / Q000235:genetics*; D004200:Diseases in Twins / Q000453:epidemiology* / Q000235:genetics*; D006801:Humans; D018433:Twin Studies as Topic