Division of Gastroenterology and Hepatology, Department of Internal Medicine, Toho University Sakura Medical Center, Sakura, Chiba, Japan

Katsuyoshi Matsuoka & Akihiro Yamada

Department of Gastroenterology and Hepatology, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan

Toshimitsu Fujii & Ryuichi Okamoto

Inflammatory Bowel Disease Center, Yokohama City University Medical Center, Minami-ku, Yokohama, Kanagawa, Japan

Reiko Kunisaki

Department of Gastroenterology and Hepatology, Kyorin University School of Medicine, Mitaka, Tokyo, Japan

Minoru Matsuura & Tadakazu Hisamatsu

Center for Inflammatory Bowel Disease, Division of Gastroenterology and Hepatology, Department of Internal Medicine, Hyogo Medical University, Nishinomiya, Hyogo, Japan

Kenji Watanabe & Shinichiro Shinzaki

Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan

Hisashi Shiga

Department of Inflammatory Bowel Disease Center, Fukuoka University Chikushi Hospital, Chikushino, Fukuoka, Japan

Noritaka Takatsu

Division of Digestive Endoscopy, Shiga University of Medical Science, Otsu, Shiga, Japan

Shigeki Bamba

Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Shinjiku-ku, Tokyo, Japan

Yohei Mikami

Department of Surgery and Inflammatory Bowel Disease Center, Yokkaichi Hazu Medical Center, Yokkaichi, Mie, Japan

Takayuki Yamamoto & Takahiro Shimoyama

IBD Center, Hokkaido Preventive Welfare Federation of Agricultural Cooperative, Sapporo-Kosei General Hospital, Sapporo, Hokkaido, Japan

Satoshi Motoya

Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Higashi-ku, Fukuoka, Japan

Takehiro Torisu

Center for Advanced IBD Research and Treatment, Kitasato University Kitasato Institute Hospital, Minato-ku, Tokyo, Japan

Taku Kobayashi

Department of Advanced Endoscopy, Fujita Health University School of Medicine, Toyoake, Aichi, Japan

Naoki Ohmiya

Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Minato-ku, Tokyo, Japan

Masayuki Saruta

Department of Gastroenterology, Toyama Prefectural Central Hospital, Toyama, Toyama, Japan

Koichiro Matsuda

Division of Gastroenterology, Department of Internal Medicine, School of Medicine, Iwate Medical University, Morioka, Iwate, Japan

Takayuki Matsumoto

Department of Gastroenterology and Hepatology, Sapporo Medical University School of Medicine, Sapporo, Hokkaido, Japan

Hiroshi Nakase

IBD Center, Sapporo Higashi Tokushukai Hospital, Sapporo, Hokkaido, Japan

Atsuo Maemoto

Department of Gastroenterology and Hepatology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan

Shinichiro Shinzaki

Medical Affairs Division, Janssen Pharmaceutical K.K., Chiyoda-ku, Tokyo, Japan

Yoko Murata, Shinichi Yoshigoe & Ayako Sasaki

Statistics & Decision Sciences, Janssen Pharmaceutical K.K., Chiyoda-ku, Tokyo, Japan

Tsutomu Yajima