title: The three groups of polymyositis.
authors.forename: G
authors.initials: G
authors.lastname: Serratrice
mesh_terms: D003882:Dermatomyositis / Q000175:diagnosis / Q000473:pathology; D003937:Diagnosis, Differential; D006801:Humans; D009220:Myositis / Q000175:diagnosis* / Q000473:pathology; D018979:Myositis, Inclusion Body / Q000175:diagnosis / Q000473:pathology