title: [Tradition or dogma of the apex beat].
authors.affiliation: Editorial Office, Japanese College of Cardiology, Tokyo.
authors.forename: T
authors.initials: T
authors.lastname: Sakamoto
mesh_terms: D004562:Electrocardiography; D006321:Heart / Q000502:physiology*; D006801:Humans; D009200:Myocardial Contraction; D010701:Phonocardiography