title: Case records of the Massachusetts General Hospital. Weekly clinicopathological exercises. Case 2-1979.
mesh_terms: D002675:Child, Preschool; D003937:Diagnosis, Differential; D004200:Diseases in Twins / Q000175:diagnosis; D004562:Electrocardiography; D004719:Endomyocardial Fibrosis / Q000150:complications / Q000175:diagnosis / Q000473:pathology*; D005260:Female; D006333:Heart Failure / Q000209:etiology / Q000235:genetics; D006801:Humans; D009206:Myocardium / Q000473:pathology