The relative value of electrocardiography and photoroentgenography for cardiac surveys.
D002318:Cardiovascular Diseases / Q000175:diagnosis*; D003935:Diagnostic Techniques, Cardiovascular; D004562:Electrocardiography; D006321:Heart / Q000000981:diagnostic imaging*; D006801:Humans; D011859:Radiography
CARDIOVASCULAR DISEASES/diagnosis; ELECTROCARDIOGRAPHY; HEART/radiography; ROENTGENOGRAPHY