Figure 1.

Systems approach to clinical performance and error applied to surgery. OR, operating room. Reprinted from British Journal of Medical and Surgical Urology, Vol 2/edition number 1, Shabnam Undre, Sonal Arora and Nick Sevdalis, Surgical performance, human error and patient safety in urological surgery, Pages No.9, Copyright (2009), with permission from Elsevier [3].