1 School of Medicine, Kyungpook National University, Daegu, Korea, Republic of

1 Remedika Private Hospital, Skopje, North Macedonia

1 Chonnam National Univeristy Medical School, Gwangju, Korea, Republic of

2 Hallym University College of Medicine, Dongtan, Korea, Republic of

3 Institute of Gastroenterology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea, Republic of

4 Yeungnam University College of Medicine, Daegu, Korea, Republic of

1 Sapienza University of Rome, Roma, Italy

2 Royal Free Hospital, London, United Kingdom, London, United Kingdom

3 Royal Free Unit for Endoscopy, The Royal Free Hospital, University College London Institute for Liver and Digestive Health, Hampstead, London, United Kingdom, London, United Kingdom

4 Department of Cellular Pathology, Royal Free London NHS Foundation Trust, London, UK, London, United Kingdom

5 Neuroendocrine Tumour Unit, ENETS Centre of Excellence, Royal Free Hospital, London, United Kingdom, London, United Kingdom

1 Hospital Clinic, Barcelona, Spain

2 University of Milan, Milan, Italy

3 Consorci Sanitari de Terrassa, Barcelona, Spain

4 Osakideta, Bilbao, Spain

5 Instituto Biodonostia, San Sebastián, Spain

6 Hospital de Bellvitge, Hospitalet de Llobregat, Spain

7 Puerta de Hierro University Hospital, Majadahonda, Spain

8 Hospital Universitario 12 de Octubre, Madrid, Spain

9 Hospital Universitari Vall d'Hebron, Barcelona, Spain

10 Hospital Clinico Valencia, Valencia, Spain

11 Hospital Virgen del Rocio, Sevilla, Spain

12 Hospital de Sant Joan Despi,, Barcelona, Spain

13 Althaia, Xarxa Assistencial Universitària de Manresa, Manresa, Spain

14 Fundacion Instituto Valenciano de Oncologia, Valencia, Spain

15 Universitary Hospital Rio Hortega, Vallodolid, Spain

16 Hospital General de Granollers, Barcelona, Spain

17 Hospital de Palamós - Clínica Girona, Gerona, Spain

18 Consorcio Corporacion Sanitaria Parc Tauli, Sabadell, Spain

19 Hospital Clinico Universitario Lozano Blesa, Zaragoza, Spain

20 Hospital Ramon y Cajal, Madrid, Spain

21 Hospital Universitario Marques de Valdecilla, Santander, Spain

22 Hospital General Universitario de Alicante, Alicante, Spain

23 Santos Reyes, Aranda de Duero, Spain

24 Complexo Hospitalario de Ourense, Ourense, Spain

25 Hospital Universitari General de Catalunya, Barcelona, Spain

26 Hospital Universitario de Canarias, La Laguna, Spain

27 Hospital Comarcal De Inca, Mallorca, Spain

28 Hospital Clinico Universitario Virgen de la Arrixaca, Murcia, Spain

29 Hospital Universitario de Mostoles, Madrid, Spain

1 Junpukai Health Maintenance Center, Okayama, Japan

2 Kawasaki Medical School General Medical Center, Okayama, Japan

3 Junpukai Health Maintenance Center Kurashiki, Kurashiki, Japan

4 Junpukai Long Life Hospital, Okayama, Japan

5 Kawasaki Medical School, Kurashiki, Japan

6 Kawasaki Medical School, Okayama, Japan

1 Ajou University School of Medicine, Suwon, Korea, Republic of