title: [Chronic polymyositis with electrophysiological characteristics of myasthenia gravis and myasthenic syndrome. A case report (author's transl)].
mesh_terms: D002908:Chronic Disease; D004576:Electromyography; D005260:Female; D006801:Humans; D008875:Middle Aged; D009157:Myasthenia Gravis / Q000150:complications / Q000503:physiopathology*; D009220:Myositis / Q000150:complications / Q000175:diagnosis / Q000503:physiopathology*; D009469:Neuromuscular Junction / Q000473:pathology