1. Aural sign of coronary artery disease (letter);Frank;N Engl J Med,1973
2. Clinical cardiology;Sokolow,1981
3. Risk factors for coronary artery disease and their management;Levy,1980
4. Inspection of the patient;Silverman,1982
5. Ear crease sign of coronary disease (letter);Frank;N Engl J Med,1977