Key references: Stratifying surgical wounds based on the level of contamination

  • Berríos-Torres SI, Umscheid CA, Bratzler DW, Leas B, Stone EC, Kelz RR, et al. Centers for Disease Control and Prevention guideline for the prevention of surgical site infection, 2017. JAMA Surg 2017;152(8):784–791 .[PubMed]