Shim C S, Neuhaus H, Tamada K
Institute for Digestive Research, Digestive Disease Center, College of Medicine, Soon Chun Hyang University Hospital, 657 Hannam-Dong, Yongsan-Ku, Seoul 140-743, Korea.
Endoscopy. 2003 Sep;35(9):752-8. doi: 10.1055/s-2003-41580.