1.Youngson G, Flin R. Patient safety in surgery: non-technical aspects of safe surgical performance. Patient Safety in Surgery. 2010;4(1):1-3. 2.Helmreich RL. On error management: lessons from aviation. BMJ: British Medical Journal. 2000;320(7237):781. 3.Weiser TG, Regenbogen SE, Thompson KD, Haynes AB, Lipsitz SR, Berry WR, et al. An estimation of the global volume of surgery: a modelling strategy based on available data. The Lancet. 2008;372(9633):139-44. 4.Sewell M, Adebibe M, Jayakumar P, Jowett C, Kong K, Vemulapalli K, et al. Use of the WHO surgical safety checklist in trauma and orthopaedic patients. International orthopaedics. 2011;35(6):897-901. 5.Haugen A, Søfteland E, Eide G, Sevdalis N, Vincent C, Nortvedt M, et al. Impact of the World Health Organization's Surgical Safety Checklist on safety culture in the operating theatre: a controlled intervention study. British journal of anaesthesia. 2013;110(5):807-15. 6.De Vries EN, Ramrattan MA, Smorenburg SM, Gouma DJ, Boermeester MA. The incidence and nature of in-hospital adverse events: a systematic review. Quality and Safety in Health Care. 2008;17(3):216-23. 7.Bates DW, Gawande AA. Improving Safety with Information Technology. New England Journal of Medicine. 2003;348(25):2526-34. 8.Yule S, Flin R, Maran N, Rowley D, Youngson G, Paterson-Brown S. Surgeons’ non-technical skills in the operating room: reliability testing of the NOTSS behavior rating system. World journal of surgery. 2008;32(4):548-56. 9.Sivathasan N, Rakowski KRM, Robertson BFM, Vijayarajan L. The World Health organization's ‘Surgical Safety Checklist’: should evidence-based initiatives be enforced in hospital policy? JRSM short reports. 2010;1(5(. 10.Semel ME, Resch S, Haynes AB, Funk LM, Bader A, Berry WR, et al. Adopting a surgical safety checklist could save money and improve the quality of care in US hospitals. Health Affairs. 2010;29(9):1593-9. 11.Panesar SP, Douglas N, Saqeb M, Bhavesh P, Bhupinder M, Mark E, et al. Can the surgical checklist reduce the risk of wrong site surgery in orthopaedics?-can the checklist help? Supporting evidence from analysis of a national patient incident reporting system. Journal of Orthopaedic Surgery and Research. 2011;6. 12.Weiser TG, Haynes AB, Dziekan G, Berry WR, Lipsitz SR, Gawande AA. Effect of A 19-Item Surgical Safety Checklist During Urgent Operations in a Global Patient Populatio. Annals of Surgery. 2010;251(5). 13.Haynes AB, Weiser TG, Berry WR, Lipsitz SR, Breizat AHS, Dellinger EP, et al. A surgical safety checklist to reduce morbidity and mortality in a global population. New England Journal of Medicine. 2009;360(5):491-9. 14.Haynes AB, Weiser TG, Berry WR, Lipsitz SR, Breizat A-HS, Dellinger EP, et al. A surgical safety checklist to reduce morbidity and mortality in a global population. New England Journal of Medicine. 2009;360(5):491-9. 15.De Vries EN, Prins HA, Crolla RM, den Outer AJ, van Andel G, van Helden SH, et al. Effect of a comprehensive surgical safety system on patient outcomes. New England Journal of Medicine. 2010;363(20):1928-37. 16.Fourcade A, Blache J-L, Grenier C, Bourgain J-L, Minvielle E. Barriers to staff adoption of a surgical safety checklist. BMJ quality & safety. 2011;21:191-7. 17.Russ S, Sevdalis N, Moorthy K, Mayer EK, Rout S, Caris J, et al. A qualitative evaluation of the barriers and facilitators towards implementation of the WHO surgical safety checklist across hospitals in England: Lessons from the ‘Surgical Checklist Implementation Project. Ann Surg. 2014. 18.Siddiqi S, Elasady R, Khorshid I, Fortune T, Leotsakos A, Letaief M, et al. Patient Safety Friendly Hospital Initiative: from evidence to action in seven developing country hospitals. International Journal for Quality in Health Care. 2012;24(2):144-51. 19.Weiser TG, Haynes AB, Dziekan G, Berry WR, Lipsitz SR, Gawande AA. Effect of a 19-item surgical safety checklist during urgent operations in a global patient population. Annals of surgery. 2010;251(5):976-80. 20.Askarian M, Kouchak F, Palenik CJ. Effect of surgical safety checklists on postoperative morbidity and mortality rates, Shiraz, Faghihy Hospital, a 1-year study. Quality Management in Healthcare. 2011;20(4):293-7. 21.Woolf SH, Kuzel AJ, Dovey SM, Phillips RL. A string of mistakes: the importance of cascade analysis in describing, counting, and preventing medical errors. The Annals of Family Medicine. 2004;2(4):317-26. 22.Nieva V, Sorra J. Safety culture assessment: a tool for improving patient safety in healthcare organizations. Quality and Safety in Health Care. 2003;12(suppl 2):ii17-ii23.