title: Innocent murmurs presenting diagnostic difficulty.
mesh_terms: D002648:Child; D002675:Child, Preschool; D006326:Heart Auscultation; D006331:Heart Diseases / Q000175:diagnosis*; D006343:Heart Septal Defects / Q000175:diagnosis; D006801:Humans; D011666:Pulmonary Valve Stenosis / Q000175:diagnosis