Ntlha e e Kwa Tlase

d Contemporary Surgery, March 1990, dits. 45-9; The American Surgeon, June 1987, dits. 350-6; Miami Medicine, January 1981, ts. 25; New York State Journal of Medicine, October 15, 1972, dits. 2524-7; The Journal of the American Medical Association, November 27, 1981, dits. 2471-2; Cardiovascular News, February 1984, ts. 5; Circulation, September 1984.