32 Letterkenny University Hospital and Donegal Clinical Research Academy, Letterkenny, Ireland.31 Department of Gastrointestinal Surgery, Stavanger University Hospital, Stavanger, Department of Clinical Medicine, University of Bergen, Bergen, Norway.30 Department of Surgery, Catholic University of Sacred Heart, Rome, Italy.29 General Surgery Department, Medical University, University Hospital St George, Plovdiv, Bulgaria.28 Emergency post-operative Department, Otavio De Freitas Hospital and Osvaldo Cruz Hospital Recife, Recife, Brazil.27 Department of Surgery, UPMC, University of Pittsburgh School of Medicine, Pittsburgh, PA USA.26 Département d'Anesthésie-Réanimation, CHU Bichat Claude-Bernard-HUPNVS, Assistance Publique-Hôpitaux de Paris, University Denis Diderot, Paris, France.25 Department of Surgery, School of Medicine, Washington University in Saint Louis, St.24 Multidisciplinary Intensive Care Research Organization (MICRO), Wellcome Trust-HRB Clinical Research, Department of Clinical Medicine, Trinity Centre for Health Sciences, St James's University Hospital, Dublin, Ireland.23 American Board of Surgery, Philadelphia, PA USA.22 Departments of Surgery and Anesthesiology, Division of Trauma and Surgical Critical Care, Vanderbilt University Medical Center, Nashville, TN USA.21 Department of Surgery, University of Washington, Seattle, WA USA.20 Abdominal Center, University Hospital Meilahti, Helsinki, Finland.19 Department of Biomedical Sciences and Public Health, Unit of Hygiene, Preventive Medicine and Public Health, UNIVPM, Ancona, Italy.18 Department of General Surgery, Division of Surgery, Rambam Health Care Campus, Haifa, Israel.17 Department of Emergency Surgery, Mozyr City Hospital, Mozyr, Belarus.16 Departments of Surgery, Critical Care Medicine, and the Regional Trauma Service, Foothills Medical Centre, Calgary, AB Canada.15 Department of Surgery, Assia Medical Group, Tel Aviv University Sackler School of Medicine, Tel Aviv, Israel.14 General and Upper GI Surgery, Queen Elizabeth Hospital, Birmingham, UK.13 Intensive Care Unit, University of Modena, Modena, Italy.12 Infectious Diseases Unit, Department of Medical and Surgical Sciences, Sant'Orsola Hospital, University of Bologna, Bologna, Italy.11 Division of Trauma Surgery, Department of Surgery, School of Medical Sciences, University of Campinas, Campinas, Brazil.10 Department of General, Visceral, and Thoracic Surgery, Klinikum Peine, Academic Hospital of Medical University Hannover, Hannover, Germany.9 Department of Surgery, Maggiore Hospital, Bologna, Italy.8 Department of Critical Care Medicine, Ghent University Hospital, Ghent, Belgium.7 Emergency Department, Trauma Center, Niguarda Hospital, Milan, Italy.6 Department of Surgery, Academic Medical Centre, Amsterdam, Netherlands.5 Acute Care Surgery, The Queen's Medical Center, Honolulu, HI USA.4 General Surgery Department, Papa Giovanni XXIII Hospital, Bergamo, Italy.3 Department of Surgery, College of Medicine and Health Sciences, UAE University, Al-Ain, United Arab Emirates.2 Department of Emergency Surgery, Maggiore Hospital, Parma, Italy.1 Department of Surgery, Macerata Hospital, Macerata, Italy.