Affiliation: | (1) Department of Pediatric Surgery, Osaka Medical Center for Maternal and Child Health, Osaka, Japan, JP;(2) Department of Surgery II, Kinki University School of Medicine, Osaka, Japan, JP;(3) Department of Surgery II, Kinki University School of Medicine, 377-2 Onohigashi, Osakasayama, Osaka 589, Japan, JP |