3. Lee MR, Hong CW, Yoon SN, Lim SB, Park KJ, Park JG. Risk factors for anastomotic leakage after resection for rectal cancer. Hepatogastroenterology 2006;53:682–6.
5. Carson JL, Sieber F, Cook DR, Hoover DR, Noveck H, Chaitman BR, et al. Liberal versus restrictive blood transfusion strategy: 3-year survival and cause of death results from the FOCUS randomised controlled trial. Lancet 2015;385:1183–9.
6. Zeroual N, Blin C, Saour M, David H, Aouinti S, Picot MC, et al. Restrictive transfusion strategy after cardiac surgery: role of central venous oxygen saturation trigger: a randomized controlled trial. Anesthesiology 2021;134:370–80.
7. So-Osman C, Nelissen R, Brand R, Faber F, Slaa RT, Stiggelbout A, et al. The impact of a restrictive transfusion trigger on post-operative complication rate and well-being following elective orthopaedic surgery: a post-hoc analysis of a randomised study. Blood Transfus 2013;11:289–95.
8. McIntyre L, Hebert PC, Wells G, Fergusson D, Marshall J, Yetisir E, et al. Is a restrictive transfusion strategy safe for resuscitated and critically ill trauma patients? J Trauma 2004;57:563–8.
9. Murphy MF, Goodnough LT. The scientific basis for patient blood management. Transfus Clin Biol 2015;22:90–6.
10. Salpeter SR, Buckley JS, Chatterjee S. Impact of more restrictive blood transfusion strategies on clinical outcomes: a meta-analysis and systematic review. Am J Med 2014;127:124–31.
11. Carless PA, Henry DA, Carson JL, Hebert PP, McClelland B, Ker K. Transfusion thresholds and other strategies for guiding allogeneic red blood cell transfusion. Cochrane Database Syst Rev 2010;(10):CD002042.
13. Al-Riyami AZ, Burnouf T, Wood EM, Devine DV, Oreh A, Apelseth TO, et al. International Society of Blood Transfusion survey of experiences of blood banks and transfusion services during the COVID-19 pandemic. Vox Sang 2022;117:822–30.
14. Bertelsen CA, Andreasen AH, Jørgensen T, Harling H, Danish Colorectal Cancer Group. Anastomotic leakage after anterior resection for rectal cancer: risk factors. Colorectal Dis 2010;12:37–43.
15. Mangram AJ, Horan TC, Pearson ML, Silver LC, Jarvis WR, The Hospital Infection Control Practices Advisory Committee. Guideline for prevention of surgical site infection, 1999. Am J Infect Control 1999;27:97–132.
16. Kaneko M, Sasaki S, Ishimaru K, Terai E, Nakayama H, Watanabe T. The impact of perioperative allogeneic blood transfusion on survival in elderly patients with colorectal cancer. Anticancer Res 2015;35:3553–8.
19. Acheson AG, Brookes MJ, Spahn DR. Effects of allogeneic red blood cell transfusions on clinical outcomes in patients undergoing colorectal cancer surgery: a systematic review and meta-analysis. Ann Surg 2012;256:235–44.