title: Portable electro-phonocardiograph using magnetic tape recorder equipped with patient's voice print.
mesh_terms: D001022:Aortic Valve Insufficiency / Q000150:complications / Q000175:diagnosis; D001024:Aortic Valve Stenosis / Q000150:complications / Q000175:diagnosis; D002648:Child; D004562:Electrocardiography; D006801:Humans; D008280:Magnetics; D008297:Male; D008875:Middle Aged; D010701:Phonocardiography / Q000295:instrumentation*; D005082:Physical Exertion; D013637:Tape Recording; D013771:Tetralogy of Fallot / Q000175:diagnosis; D014831:Voice