Footnote

d Contemporary Surgery, Marso 1990, pp. 45-9; The American Surgeon, Hunyo 1987, pp. 350-6; Miami Medicine, Enero 1981, p. 25; New York State Journal of Medicine, Oktubre 15, 1972, pp. 2524-7; The Journal of the American Medical Association, Nobyembre 27, 1981, pp. 2471-2; Cardiovascular News, Pebrero 1984, p. 5; Circulation, Septiyembre 1984.