Department of Health Economics;
Corvinus University of Budapest;
Semmelweis University Doctoral School of Clinical Medicine;
IBD Clinical and Research Centre;
ISCARE a.s.;
1~(st) Faculty of Medicine;
Charles University;
Department of Gastroenterology;
The Maria Sklodowska-Curie Memorial Cancer Centre and Institute of Oncology and Medical Center for Postgraduate Education;
Gastroenterology Unit;
Department of Internal Medicine V;
University Hospital Bratislava;
Public Health Department;
Health Sciences Faculty;
Medical University in ?ód? and National Health Fund;
Department of Gastroenterology and Hepatology;
Carol Davila University;
Department of Gastroenterology;
Medical Academy;
Lithuanian University of Health Sciences;
1~(st) Department of Medicine;
Semmelweis University;