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. 2016 Jul 15;31(3):1192–1202. doi: 10.1007/s00464-016-5090-8

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© The Author(s) 2016

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Fig. 2 — Difference between novice and expert surgeons mean normalized metrics across all exercises (ordered by magnitude). Gray bars correspond to viewpoint metrics. Black bars correspond to conventional performance metrics. Error bars represent +1 SD. Top brackets indicate significant differences between metrics (p < 0.05)