A simple alternative precordial stethoscope.
Dunteman
E
E
Hirshberg
G E
GE
D002648:Child; D002675:Child, Preschool; D006326:Heart Auscultation / Q000295:instrumentation*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007234:Infant, Premature; D010372:Pediatrics / Q000295:instrumentation*