title: The natural history of cardiac conduction system disease in myotonic muscular dystrophy as determined by serial electrophysiology studies.
mesh_terms: D002036:Bundle of His / Q000503:physiopathology*; D004562:Electrocardiography; D006329:Heart Conduction System / Q000503:physiopathology*; D006801:Humans; D009136:Muscular Dystrophies / Q000503:physiopathology*