○Satoshi Egawa1, Shinjiro Yamaguchi1, Masahide Oshita1, Naoki Mizutani4, Takeshi Nakamura4, Hideki Hagiwara4, Kenji Hibino2, Yuko Sakakibara2, Takuya Yamada2, Eiji Mita2, Fumihiko Nakanishi5, Masahiko Tsujii3, Tetsuo Takehara3
(1.Osaka Police Hospital, Osaka, Japan, 2.National Hospital Organization, Osaka Medical Center, Osaka, Japan, 3.Dep, of Gastroenterology and Hepatology, Osaka university graduate school of medicine, Osaka, Japan, 4.Kansai Rosai Hospital, Hyogo, Japan, 5.National Hospital Organization, Osaka Minami Medical Center)
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