Reiko Ashida 1, Satoru Yasukawa 2, Akio Yanagisawa 2, Ken Kamata 3, Masatoshi Kudo 3, Takeshi Ogura 4, Kazuhide Higuchi 4, Nobuyasu Fukutake 1, Hiroko Nebiki 5, Satoru Hirose 6, Noriyuki Hoki 6, Masanori Asada 7, Shujiro Yazumi 7, Makoto Takaoka 8, Kazuichi Okazaki 8, Fumihiro Matsuda 9, Yoshihiro Okabe 9, Masayuki Kitano 3
1 Departments of Cancer Survey and Gastrointestinal Oncology, Osaka Medical Center for Cancer and Cardiovascular Diseases, Osaka, Japan
2 Department of Surgical Pathology, Kyoto Prefectural University of Medicine, Kyoto, Japan
3 Gastroenterology and Hepatology, Kinki University, Osaka-sayama, Japan
4 The Second department of Internal Medicine, Osaka Medical College, Takatsuki, Japan
5 Department of Gastroenterology, Osaka City General Hospital, Osaka, Japan
6 Department of Gastroenterology, Bell Land General Hospital, Sakai, Japan
7 Digestive Disease Center, Kitano Hospital, Osaka, Japan
8 Gastroenterology and Hepatology, Dept.of Internal Medicine, Kansai Medical University, Hirakata, Japan
9 Department of Gastroenterology and Hepatology, Osaka Red Cross Hospital, Osaka, Japan