title: [Left cardial insufficiency and the P wave--the relationship with the phonocardiogram].
mesh_terms: D000368:Aged; D004562:Electrocardiography; D005080:Exercise Test; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000175:diagnosis*; D010701:Phonocardiography