Unexplained congestive heart failure--value of echocardiography in detecting correctible disease.
D000368:Aged; D006332:Cardiomegaly / Q000175:diagnosis; D003327:Coronary Disease / Q000175:diagnosis; D003937:Diagnosis, Differential; D004452:Echocardiography; D006331:Heart Diseases / Q000175:diagnosis; D006333:Heart Failure / Q000209:etiology*; D006344:Heart Septal Defects, Atrial / Q000175:diagnosis*; D006801:Humans; D008297:Male