Maelezo ya Chini
d Contemporary Surgery, Machi 1990, kur. 45-49; The American Surgeon, Juni 1987, kur. 350-356; Miami Medicine, Januari 1981, uku. 25; New York State Journal of Medicine, Oktoba 15, 1972, kur. 2524-2527; The Journal of the American Medical Association, Novemba 27, 1981, kur. 2471-2472; Cardiovascular News, Februari 1984, uku. 5; Circulation, Septemba 1984.