Should phonocardiography be abandoned?
D003937:Diagnosis, Differential; D005069:Evaluation Studies as Topic; D006349:Heart Valve Diseases / Q000175:diagnosis; D006801:Humans; D007348:Insurance, Health; D007349:Insurance, Health, Reimbursement; D010701:Phonocardiography / Q000706:statistics & numerical data*; D014481:United States