1. Emeritus Head of Gastroenterology, Ev. Krankenhaus Kalk, University of Cologne , Germany
2. Department for Gastroenterology, Infectious diseases and Rheumatology, Campus Benjamin Franklin, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin , Berlin , Germany
3. Department VII of Gastroenterology, Hepatologie and Clinical Nutrition, Wojewódzki Szpital Specjalistyczny im. J. Gromkowskiego , Wroclaw , Poland
4. State Budgetary Healthcare Institution ‘City Hospital #26’ , Saint-Petersburg , Russian Federation
5. Municipal Institution of Kyiv Regional Rada ‘Kyiv Regional Clinical Hospital’ , Kyiv , Ukraine
6. Centrum Medyczne Pratia Bydgoszcz , Bydgoszcz , Poland
7. Endoscopy Department, Daugavpils Regional Hospital , Daugavpils , Latvia
8. State Public Health Institution ‘Novgorod regional clinical hospital’ , Velikiy Novgorod , Russian Federation
9. Federal State Budget Public Health Institution All-Russian centre of Emergency and Radiation medicine n. a., A.M.Nikiforov of Ministry of Emergency Situations of Russia , Saint-Petersburg , Russian Federation
10. Pauls Stradins Clinical University Hospital, Gastroenterology, Hepatology and Nutrition Centre , Riga , Latvia
11. Private small-scale enterprise “Pulse”, Therapeutical Department , Vinnitsya , Ukraine
12. Municipal Institution of Healthcare ‘Prof. Shalimova Kharkiv City Clinical Hospital # 2’ , Kharkiv , Ukraine
13. Federal State Budget Educational Institution of High Education ‘Kazan State Medical University ’, Kazan , Russian Federation
14. Federal State Autonomous Educational Institution of High Education ‘Kazan [Volga region] Federal University’ , Kazan , Russian Federation
15. Ukrainian-German Gastroenterology Center ‘BYK-Kyiv’ , Kyiv , Ukraine
16. Municipal Institution ‘Odesa Regional Clinical Hospital’, Polyclinic department , Odesa , Ukraine
17. State Public Health Institution ‘Nizhny Novgorod regional clinical hospital n.a. N.A.Semashko’ , Nizhny Novgorod , Russian Federation
18. Non-state Public Health Institution ‘Railway clinical hospital on station Samara’ of JSC ‘Russian railways’ , Samara , Russian Federation
19. Municipal Institution ‘Zaporizhzhya City Clinical Hospital of Urgent Care’, Surgery department #3 , Zaporizhya , Ukraine
20. Semmelweis Egyetem ÁOK, II. Belgyógyászati Klinika , Budapest , Hungary
21. Lviv Regional Clinical Hospital, Gastroenterology department; Danylo Halytsky Lviv National Medical University , Lviv , Ukraine
22. Centrum Medyczne Pratia Gdynia , Gdynia , Poland
23. Kyiv City Clinical Hospital #8, Department of Gastroenterology. P.L. Shupyk National Medical Academy of Postgraduate Education , Kyiv , Ukraine
24. Municipal Institution ‘City Hospital #1’, Surgery department , Zaporizhya , Ukraine
25. Saint-Petersburg State Public Health Institution ‘City Hospital of Saint Venerable Martyr Elizabeth’ , Saint-Petersburg , Russian Federation
26. Friedrich-Alexander-University Erlangen-Nuremberg, Klinikum Bayreuth, Institute of Pathology , Bayreuth , Germany
27. Dr. Falk Pharma GmbH, Clinical Research and Development , Freiburg , Germany