1. Department of Gastroenterology and Hepatology, Amsterdam Gastroenterology Endocrinology Metabolism Research Institute, Amsterdam University Medical Centre, Vrije Universiteit Amsterdam , Amsterdam , the Netherlands
2. Department of Gastroenterology and Hepatology, Rode Kruis hospital , Beverwijk , the Netherlands
3. Department of Gastroenterology and Hepatology, Máxima Medical Centre , Veldhoven , the Netherlands
4. Department of Clinical Pharmacy and Pharmacology, Máxima Medical Centre , Veldhoven , the Netherlands
5. Department of Gastroenterology and Hepatology, Slingeland Hospital , Doetinchem , the Netherlands
6. Department of Gastroenterology and Hepatology, Streekziekenhuis Koningin Beatrix , Winterswijk , the Netherlands
7. Department of Radiology and Nuclear Medicine, Amsterdam University Medical Centre, Vrije Universiteit Amsterdam , Amsterdam , the Netherlands