title: Relationships between the electrocardiogram and phonocardiogram: potential for improved heart monitoring.
mesh_terms: D000328:Adult; D004562:Electrocardiography; D006321:Heart / Q000502:physiology*; D006801:Humans; D008297:Male; D008991:Monitoring, Physiologic / Q000295:instrumentation*; D010701:Phonocardiography; D011674:Pulse