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Choi SH, Kang CM, Lee WJ, Chi HS.Choi SH, et al.Surg Endosc. 2011 Jul;25(7):2360-1. doi: 10.1007/s00464-010-1556-2. Epub 2011 Feb 7.Surg Endosc. 2011.PMID: 21298529
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