1 University Hospital Center Sestre Milosrdnice, Zagreb, Croatia

2 University of Zagreb, School of Medicine, Zagreb, Croatia

1 Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom

2 Institution Translational Gastroenterology and Hepatology Unit, Oxford, United Kingdom

1 Hospital Senhora da Oliveira – Guimarães, Guimarães, Portugal

2 School of Medicine, University of Minho, Braga, Portugal

3 ICVS/3B’s, PT Government Associate Laboratory, Guimarães/Braga, Portugal

1 Universidad Autonoma de Nuevo Leon, Monterrey, Mexico

2 Universidad de Monterrey / Christus Muguerza Sur, Monterrey, Mexico

3 Instituto Nacional de Cancerología, Mexico City, Mexico

1 Shizuoka Cancer Center, Shizuoka, Japan

2 National Cancer Center Hospital, Tokyo, Japan

3 Osaka International Cancer Institute, Osaka, Japan

4 Hiroshima University Hospital, Hiroshima, Japan

5 Jichi Medical University, Shimotsuke, Japan

6 National Cancer Center Hospital East, Kashiwa, Japan

7 Okayama University Hospital, Okayama, Japan

8 Gunma University Graduate School of Medicine, Maebashi, Japan

9 Fukuoka University Chikushi Hospital, Chikushino, Japan

10 Sano Hospital, Kobe, Japan

11 Tonan Hospital, Sapporo, Japan

12 Kyoto University Hospital, Kyoto, Japan

13 Hirosaki University Graduate School of Medicine, Hirosaki, Japan

14 Kyoto Second Red Cross Hospital, Kyoto, Japan

15 Hiroshima City North Medical Center Asa Citizens Hospital, Hiroshima, Japan

16 Japan Community Healthcare Organization Osaka Hospital, Osaka, Japan

17 Aichi Cancer Center Hospital, Nagoya, Japan

18 Ishikawa Prefectural Central Hospital, Kanazawa, Japan

19 Kyoto Katsura Hospital, Kyoto, Japan

20 Kyoto First Red Cross Hospital, Kyoto, Japan

21 Kyoto Prefectural University of Medicine, Kyto, Japan

22 Kyushu University Hospital, Fukuoka, Japan

23 Shikoku Cancer Center, Matsuyama, Japan

24 Tobata Kyoritsu Hospital, Kitakyushu, Japan

25 Kagawa University, Kagawa, Japan

26 Kindai University Faculty of Medicine, Osaka-sayama, Japan

27 National Hospital Organization Tokyo Medical Center, Tokyo, Japan

28 NTT Medical Center Sapporo, Sapporo, Japan

29 Osaka University Graduate School of Medicine, Suita, Japan

30 Kitasato University Hospital, Sagamihara, Japan

31 Tokyo Medical University Hospital, Tokyo, Japan

32 Tokyo Women’s Medical University Adachi Medical Center, Tokyo, Japan

33 Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan

34 Tochigi Cancer Center, Utsunomiya, Japan

35 Akita Red Cross Hospital, Akita, Japan

36 University of Tsukuba Hospital, Tsukuba, Japan

37 NTT Medical Center Tokyo, Tokyo, Japan

38 Aizu Medical Center, Fukushima Medical University, Aizuwakamatsu, Japan

39 Akasaka Endoscopic Clinic, Tokyo, Japan

40 Asahikawa Medical University, Asahikawa, Japan

41 Oda GI Endoscopy and Gastroenterology Clinic, Kumamoto, Japan

42 Takatsuki Red Cross Hospital, Takatsuki, Japan

43 National Hospital Organization Kure Medical Center and Chugoku Cancer Center, Kure, Japan

44 Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan

45 Hokusetsu General Hospital, Takatsuki, Japan

46 Sakai City Medical Center, Sakai, Japan

47 Hanwa Memorial Hospital, Osaka, Japan

48 Graduate School of Medicine Science, Kyoto Prefectural University of Medicine, Kyoto, Japan

49 Toho University Omori Medical Center, Tokyo, Japan

1 Beaujon Hospital, Paris, France

2 Hotel Dieu Hospital, Paris, France

3 Bichat Hospital, Paris, France

4 Université Paris, Paris, France

5 Beaujon Hospital, Clichy, France