1. Department of Anesthesiology Keck School of Medicine University of Southern California 2020 Zonal Avenue IRD 322 90033 Los Angeles CA USA
2. Department of Anesthesiology, Perelman School of Medicine University of Pennsylvania 3400 Spruce St 19104 Philadelphia PA USA
3. Department of Anesthesia and Intensive Care Medicine Royal Surrey County Hospital Egerton Road GU5 7XX Guildford, Surrey UK
4. Sir Charles Gardiner Hospital Hospital Avenue 6009 Nedlands WA Australia
5. Salford Royal NHS Foundation Trust Stott La M6 8HD Salford UK
6. University of Manchester Manchester UK
7. Western General Hospital, NHS Lothian EH4 2XU Edinburgh Scotland
8. Hvidovre University Hospital Copenhagen Denmark
9. Center for Surgery and Public Health, Harvard Medical School Brigham and Women's Hospital 1620 Tremont Street 02120 Boston MA USA
10. Division of Trauma, Burns, Surgical Critical Care, and Emergency Surgery Brigham and Women's Hospital 1620 Tremont Street 02120 Boston MA USA
11. Perioperative Medicine for Older People Undergoing Surgery (POPS) Guy's and St Thomas’ NHS Foundation Trust London UK
12. Faculty of Life Sciences and Medicine King's College London London UK
13. Research Department of Targeted Intervention, Division of Surgery & Interventional Science University College London London UK
14. Department of Surgery Virginia Commonwealth University Health System 1200 E. Broad Street 23298 Richmond VA USA
15. Department of Anesthesiology and Critical Care Medicine, Department of Surgery The Johns Hopkins University School of Medicine 1800 Orleans Street 21287 Baltimore MD USA
16. Department of Emergency and Trauma Surgery Karolinska University Hospital, CLINTEC, Karolinska Institutet Stockholm Sweden
17. Karolinska University Hospital Huddinge Hälsovägen 3. B85 S 141 86 Stockholm Sweden
18. Department of Anaesthesia, Perioperative Medicine and Critical Care Medway Maritime Hospital Windmill Road ME7 5NY Gillingham, Kent UK
19. Division of Trauma, Burns and Surgical Critical Care Brigham and Women's Hospital 75 Francis Street 02115 Boston MA USA
20. Division of Trauma and Acute Care Surgery Medical College of Wisconsin 8701 Watertown Plank Rd 53226 Milwaukee WI USA
21. Department of Visceral Surgery Lausanne University Hospital CHUV, University of Lausanne (UNIL) Rue du Bugnon 46 1011 Lausanne Switzerland
22. Department of Anaesthesia St George's Hospital Tooting, London UK
23. Kaiser Permanente Research Department of Research & Evaluation 100 South Los Robles Ave, 2nd Floor 91101 Pasadena CA USA
24. Department of General & Colorectal Surgery Salford Royal NHS Foundation Trust Scott La M6 8HD Salford UK
25. Department of Surgery, Faculty of Medicine and Health School of Health and Medical Sciences Örebro University Örebro Sweden
26. Gastrointestinal Surgery, Nottingham Digestive Diseases Centre and National Institute for Health Research (NIHR) Nottingham Biomedical Research Centre, Queen's Medical Centre Nottingham University Hospitals and University of Nottingham NG7 2UH Nottingham UK
27. MRC Versus Arthritis Centre for Musculoskeletal Ageing Research, Queen's Medical Centre, School of Life Sciences University of Nottingham NG7 2UH Nottingham UK
28. Division of Trauma and Emergency Surgery, Department of Surgery, School of Medical Sciences Orebro University Hospital, Orebro University 701 85 Orebro Sweden
29. Division of Trauma and Acute Care Surgery, Department of Surgery Fundación Valle del Lili Cra 98 No. 18 – 49 760032 Cali Colombia
30. Sección de Cirugía de Trauma y Emergencias Universidad del Valle – Hospital Universitario del Valle Cl 5 No. 36‐08 760032 Cali Colombia
31. Division of Traumatology, Surgical Critical Care and Emergency Surgery University of Pennsylvania 19104 Philadelphia PA USA
32. Department of Anesthesiology The Ohio State University and Wexner Medical Center 410 West 10th Ave 43210 Columbus OH USA
33. Department of Surgery University of California San Francisco 513 Parnassus Ave HSW1601 94143 San Francisco CA USA
34. Department of Anesthesiology, Critical Care and Pain Medicine, and Department of Anesthesiology Weill‐Cornell Medicine, Hospital for Special Surgery 535 East 70th Street 10021 New York NY USA
35. Division of Colon and Rectal Surgery, Department of Surgery Mayo Clinic College of Medicine, Mayo Clinic Arizona 5777 e. Mayo Blvd. 85054 Phoenix AZ USA
36. Department of Anesthesiology and Critical Care Medicine, and Leonard Davis Institute for Health Economics University of Pennsylvania 3400 Spruce St 19104 Philadelphia PA USA
37. University College London London UK