title: Electromyography and progressive systemic sclerosis.
mesh_terms: D004576:Electromyography; D006801:Humans; D008722:Methods; D009132:Muscles / Q000503:physiopathology*; D009431:Neural Conduction; D012595:Scleroderma, Systemic / Q000175:diagnosis* / Q000503:physiopathology