[Evaluation on standards of left atrial enlargement from echocardiography, radiography and electrocardiography].
D006332:Cardiomegaly / Q000175:diagnosis* / Q000000981:diagnostic imaging; D004452:Echocardiography; D004562:Electrocardiography; D006325:Heart Atria / Q000000981:diagnostic imaging; D006801:Humans; D011859:Radiography