1 Department of Gastroenterology and Hepatology, Amsterdam University Medical Center, Amsterdam Gastroenterology, Endocrinology & Metabolism, Amsterdam, the Netherlands; Department of Gastroenterology and Hepatology, Leiden University Medical Center, Leiden, the Netherlands.
2 Department of Gastroenterology and Hepatology, Leiden University Medical Center, Leiden, the Netherlands.
3 Department of Gastroenterology and Hepatology, Amsterdam University Medical Center, Amsterdam Gastroenterology, Endocrinology & Metabolism, Amsterdam, the Netherlands.