[1] Orebro University,Division of Trauma and Emergency Surgery, Orebro University Hospital and School of Medical Sciences
[2] Perelman School of Medicine at the University of Pennsylvania,Division of Traumatology, Surgical Critical Care and Emergency Surgery
[3] Corporal Michael Crescenz Veterans Affairs Medical Center,Servicio de Cirugía General, Unidad de Cirugía de Urgencias
[4] Helsinki University Hospital HUS Meilahden Tornisairaala,Clinical Epidemiology and Biostatistics, School of Medical Sciences
[5] Hospital Universitario Virgen del Rocío,Center for Perioperative Outcomes Research and Transformation (CPORT)
[6] Orebro University,Leonard Davis Institute of Health Economics (LDI)
[7] Royal College of Surgeons in Ireland Medical University,undefined
[8] University of Pennsylvania,undefined
[9] University of Pennsylvania,undefined