[1] Tech Univ Munich, Univ Hosp Rechts Isar, Clin Trauma Surg, Emergency Dept, D-81675 Munich, Germany
[2] Tech Univ Munich, Univ Hosp Rechts Isar, Inst Med Stat & Epidemiol, D-81675 Munich, Germany
[3] Univ Tubingen, BG Trauma Ctr, Tubingen, Germany
[4] Hessingpk Clin, Augsburg, Germany
[5] Steadman Philippon Res Inst, Steadman Clin, Vail, CO USA