title: Stethoscopic and phonoaudio devices: historical and future perspectives.
authors.forename: M B
authors.initials: MB
authors.lastname: Selig
mesh_terms: D006326:Heart Auscultation / Q000266:history / Q000295:instrumentation*; D049670:History, 17th Century; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D049690:History, Ancient; D006801:Humans; D008991:Monitoring, Physiologic / Q000295:instrumentation; D010701:Phonocardiography / Q000266:history / Q000295:instrumentation