title: Epidemiology of polymyositis/dermatomyositis.
authors.forename: M C
authors.initials: MC
authors.lastname: Hochberg
mesh_terms: D015331:Cohort Studies; D003882:Dermatomyositis / Q000453:epidemiology* / Q000209:etiology; D006801:Humans; D009220:Myositis / Q000453:epidemiology* / Q000209:etiology; D011379:Prognosis