title: Cardiac parasympathetic impairment in gastrointestinal Chagas' disease.
mesh_terms: D000328:Adult; D002598:Chagas Cardiomyopathy / Q000503:physiopathology*; D014355:Chagas Disease / Q000150:complications*; D005767:Gastrointestinal Diseases / Q000209:etiology*; D006321:Heart / Q000294:innervation*; D006339:Heart Rate; D006801:Humans; D008297:Male; D010275:Parasympathetic Nervous System / Q000503:physiopathology*; D005082:Physical Exertion