Lund University, Lund University, University of Bristol, Erasmus University Rotterdam (EUR) - Department of Epidemiology, University of Dundee, Erasmus University Rotterdam (EUR) - Erasmus Medical Center (MC), Erasmus University Rotterdam (EUR) - Department of Gastroenterology & Hepatology, Erasmus University Rotterdam (EUR) - Department of Epidemiology, University of Bristol, University of Bristol - Department of Population Health Sciences, Lund University - Department of Clinical Sciences, Lund University, Lund University - Department of Clinical Sciences and University of Dundee - Division of Population Health and Genomics