title: [Essential points to remember].
authors: Ph
authors: P
authors: Letonturier
mesh_terms: D001706:Biopsy; D003882:Dermatomyositis / Q000175:diagnosis* / Q000628:therapy; D003937:Diagnosis, Differential; D006801:Humans; D007249:Inflammation; D018979:Myositis, Inclusion Body / Q000175:diagnosis* / Q000628:therapy; D017285:Polymyositis / Q000175:diagnosis* / Q000628:therapy