Institution: | (1) Department of Surgery, Kinan General Hospital, 510 Minato, Tanabe, Wakayama 646, Japan, JP;(2) Department of Surgery, Nanko Hospital, 2-11-15 Suminoeku, Kitakakagaya, Osaka 559, Japan, JP;(3) First Department of Surgery, Osaka University Medical School, Suita, Osaka 565, Japan, JP |