1. Department of Gastroenterology and Hepatology, Erasmus MC – University Medical Center Rotterdam, Rotterdam, The Netherlands
2. Department of Gastroenterology and Hepatology, Deventer Hospital, Deventer, The Netherlands
3. Department of Gastroenterology and Hepatology, Ikazia Hospital, Rotterdam, The Netherlands
4. Department of Gastroenterology and Hepatology, Rijnstate Hospital, Arnhem, The Netherlands
5. Department of Public Health, Erasmus MC – University Medical Center Rotterdam, Rotterdam, The Netherlands
6. Department of Gastroenterology and Hepatology, Sint Franciscus Gasthuis, Rotterdam, The Netherlands
7. Department of Gastroenterology and Hepatology, Academic Medical Center, Amsterdam, The Netherlands