title: Endomyocardial biopsy in idiopathic cardiomyopathy; with reference to its natural history.
mesh_terms: D001706:Biopsy; D009202:Cardiomyopathies / Q000473:pathology*; D005260:Female; D006801:Humans; D008297:Male; D009206:Myocardium / Q000473:pathology*