[1] Tallaght Univ Hosp, Dept Surg, Dublin, Ireland
[2] Tallaght Univ Hosp, Dept Gastroenterol, Dublin, Ireland
[3] Penn Presbyterian Med Ctr, Penn Med, Div Traumatol Surg Crit Care & Emergency Surg, Philadelphia, PA USA
[4] Orebro Univ, Sch Med Sci, S-70281 Orebro, Sweden
[5] Orebro Univ Hosp, Div Trauma & Emergency Surg, Dept Surg, S-70185 Orebro, Sweden
[6] Karolinska Univ Hosp, Div Trauma & Emergency Surg, Dept Surg, Stockholm, Sweden
[7] Karolinska Inst, Dept Clin Sci Intervent & Technol, Div Surg, Stockholm, Sweden
[8] Orebro Univ, Clin Epidemiol & Biostat, Sch Med Sci, Orebro, Sweden
[9] George Washington Univ, Ctr Trauma & Crit Care, Dept Surg, Washington, DC USA