Percussion of the heart contrasted with roentgen examination (Williams, 1899).
D006332:Cardiomegaly / Q000209:etiology; D005260:Female; D006321:Heart / Q000033:anatomy & histology* / Q000000981:diagnostic imaging*; D006326:Heart Auscultation / Q000266:history*; D049672:History, 19th Century; D006801:Humans; D008297:Male; D009929:Organ Size; D010474:Percussion; D011859:Radiography / Q000266:history*