title: A 15-year-old male with progressive muscular dystrophy of the becker type and severe heart failure.
mesh_terms: D000293:Adolescent; D002303:Cardiac Output, Low / Q000209:etiology*; D009202:Cardiomyopathies / Q000209:etiology* / Q000473:pathology; D017809:Fatal Outcome; D006801:Humans; D008297:Male; D020388:Muscular Dystrophy, Duchenne / Q000150:complications* / Q000473:pathology