Department of Internal Medicine, Division of Gastroenterology and Hepatology, Maastricht University Medical Centre+, Maastricht, Netherlands; NUTRIM - School for Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Maastricht, Netherlands. Department of Gastroenterology and Hepatology, Leiden University Medical Centre, Leiden, Netherlands. Department of Gastroenterology, Geriatrics, Internal and Intensive Care Medicine (Co-MIK), Zuyderland Medical Centre, Sittard-Geleen, Netherlands. Department of Gastroenterology and Hepatology, St Antonius Hospital, Nieuwegein, Netherlands. Department of Internal Medicine, Division of Gastroenterology and Hepatology, Maastricht University Medical Centre+, Maastricht, Netherlands. CCUVN, Woerden, Netherlands. Department of Gastroenterology and Hepatology, University Medical Centre Groningen, Groningen, Netherlands. Department of Internal Medicine, Division of Rheumatology, Maastricht University Medical Centre+, Maastricht, Netherlands; Care and Public Health Research Institute, School for Public Health and Primary Care, Maastricht University Medical Centre+, Maastricht, Netherlands. Department of Methodology and Statistics, Maastricht University, Maastricht, Netherlands. Department of Internal Medicine, Division of Gastroenterology and Hepatology, Maastricht University Medical Centre+, Maastricht, Netherlands; NUTRIM - School for Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Maastricht, Netherlands. Electronic address: m.pierik@mumc.nl.