Cardiac auscultation: the first and second heart sounds.
Georgetown University School of Medicine, Washington, District of Columbia.
J A
JA
Ronan
D006321:Heart / Q000502:physiology; D006326:Heart Auscultation; D006331:Heart Diseases / Q000175:diagnosis; D006347:Heart Sounds; D006801:Humans; D009200:Myocardial Contraction; D012119:Respiration