[Polymyositis and dermatomyositis. Value of electromyography and muscle biopsy].
D001706:Biopsy; D003882:Dermatomyositis / Q000175:diagnosis*; D004576:Electromyography; D006801:Humans; D009132:Muscles / Q000473:pathology*; D009220:Myositis / Q000175:diagnosis*; D017285:Polymyositis
BIOPSY; DERMATOMYOSITIS/diagnosis; ELECTROMYOGRAPHY; MUSCLES/pathology; MYOSITIS/diagnosis