Affiliation: | (1) Department of Surgery, Postgraduate Medical School, London, England;(2) Department of Surgery, University of Alexandria, UAR;(3) Department of Surgery, University of Bari, Italy;(4) University of Toronto, Canada;(5) Department of Surgery Kyoto Prefectural University of Medicine, Kyoto, Japan;(6) Department of Surgery, Stanford University, Palo Alto, Calif., USA |