[Editorial: Epidemiological researches in CNSRD - why? (author's transl)].
D004812:Epidemiologic Methods; D005602:France; D006801:Humans; D011446:Prospective Studies; D012129:Respiratory Function Tests; D012140:Respiratory Tract Diseases / Q000175:diagnosis / Q000453:epidemiology*; D014481:United States
Editorial: Pourquoi étudier l'épidémiologie des affections respiratoires chroniques?