1. Department of Intensive Care Medicine, Ghent University Hospital, 9000 Ghent, Belgium
2. Department of Internal Medicine and Pediatrics, Faculty of Medicine and Health Sciences, Ghent University, 9000 Ghent, Belgium
3. General, Emergency and Trauma Surgery Department, Pisa University Hospital, 56124 Pisa, Italy
4. Vall d’Hebron Institut de Recerca CRIPS, 08035 Barcelona, Spain
5. Facultad de Medicina, Universidad Autónoma de San Luis Potosi, 78210 San Luis Potosi, Mexico
6. Department of Anesthesia and Critical Care, Hospital Quironsalud Valle del Henares, 28850 Madrid, Spain
7. Department of Pharmacology and Toxicology, Complutense University of Madrid, 28040 Madrid, Spain
8. General Surgery Unit, Department of Surgery, Cittiglio-Angera Hospital, ASST SetteLaghi, 21100 Varese, Italy
9. Colorectal Surgery Unit, Department of General Surgery, Hospital Universitario La Paz, 28029 Madrid, Spain
10. Hospital La Paz Institute for Health Research (Idipaz), 28029 Madrid, Spain
11. Universidad Autonoma de Madrid, 28029 Madrid, Spain
12. 1st Department of Critical Care Medicine & Pulmonary Services, School of Medicine, National and Kapodistrian University of Athens, Evangelismos Hospital, 10675 Athens, Greece
13. Department of Intensive Care Medicine, Papageorgiou Hospital, 54646 Thessaloniki, Greece