Anne van Dalen

Six Sigma in surgery I 245 9 Authors’ contributions Contributed substantially to the conception and drafting of the article or revising it critically for important intellectual content: all authors Approved the final version of the manuscript: all authors Agree to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved: all authors Declarations of interest TPG holds intellectual property ownership of Surgical Safety Technologies Inc., is the founder of the OR Black Box®, and is supported by research grants from Medtronic Canada, Ethicon Canada, Baxter Canada, Olympus Canada, Takeda Canada, and Intuitive Canada. The other authors declare that they have no conflicts of interest or financial ties to disclose.