Acknowledgements
We would like to acknowledge and thank the members of the data safety monitoring board (Robert C. Verdonk [chair; Department of Gastroenterology and Hepatology, St. Antonius Hospital, Nieuwegein, the Netherlands], Lydi M.J.W. van Driel [Department of Gastroenterology and Hepatology Erasmus Medical Center, Rotterdam, the Netherlands], and Susan van Dieren [Department of Surgery, Amsterdam UMC, Amsterdam, the Netherlands], for their kind participation and critical evaluation of our study data.