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. 2012 Apr 26;82(5):321–324. doi: 10.4174/jkss.2012.82.5.321

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Copyright © 2012, the Korean Surgical Society

Journal of the Korean Surgical Society is an Open Access Journal. All articles are distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 2 — The placements of ports.