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Lee SW, Choi EC, Lee YM, Lee JY, Kim SC, Koh YW.Lee SW, et al. Among authors: choi ec.Laryngoscope. 2006 Sep;116(9):1632-5. doi: 10.1097/01.mlg.0000231314.86486.be.Laryngoscope. 2006.PMID: 16954994Clinical Trial.
Koh YW, Lee SW, Choi EC, Lee JD, Mok JO, Kim HK, Koh ES, Lee JY, Kim SC.Koh YW, et al. Among authors: choi ec.Eur Arch Otorhinolaryngol. 2008 Apr;265(4):453-7. doi: 10.1007/s00405-007-0513-8. Epub 2007 Nov 3.Eur Arch Otorhinolaryngol. 2008.PMID: 17978827
Koh YW, Park JH, Kim JW, Lee SW, Choi EC.Koh YW, et al. Among authors: choi ec.Surg Endosc. 2010 Jan;24(1):188-97. doi: 10.1007/s00464-009-0646-5. Epub 2009 Aug 18.Surg Endosc. 2010.PMID: 19688395
Koh YW, Park JH, Kim JW, Lee SW, Choi EC.Koh YW, et al. Among authors: choi ec.Surg Endosc. 2010 May;24(5):1117-25. doi: 10.1007/s00464-009-0738-2. Epub 2009 Dec 8.Surg Endosc. 2010.PMID: 19997752