Department of Intensive Care Medicine, Elisabeth-Tweesteden Hospital, Hilvarenbeekseweg 60, P.O. Box 90151, 5000 LC, Tilburg, The Netherlands. sjaakpwls@gmail.com. Department of Surgery, Holy Family Hospital, Nazareth, Israel, and the Azrieli Faculty of Medicine, Bar-Ilan University, Safed, Israel. Faculty of Health Sciences and Wellbeing, University of Sunderland, Sunderland, UK. Facultad de Psycologia, Universidad Anahuac Mexico, Mexico City, Mexico. Department of Bariatric Surgery, Christus Muguerza Conchita Hospital, Monterrey, Mexico. Department of Abdominal Surgery, University Medical Center Ljubljana, Zaloška cesta, Ljubljana, Slovenia. Department of Metabolic and Bariatric Surgery, The First Affiliated Hospital of Jinan University, Guangzhou, China. CHU Félix Guyon, Allée des Topazes, Saint-Denis, France. Bariatric and Upper GI Unit, Birmingham Heartlands Hospital, University Hospital Birmingham NHS Foundation Trust, Birmingham, UK. Bariatric Unit, South Tyneside and Sunderland NHS Foundation Trust, Sunderland, UK. Department of Intensive Care Medicine, Elisabeth-Tweesteden Hospital, Hilvarenbeekseweg 60, P.O. Box 90151, 5000 LC, Tilburg, The Netherlands. Department of Intensive Care Medicine, Saxenburg Medical Centre, Hardenberg, The Netherlands.