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Lim YC, Song MH, Kim SC, Kim KM, Choi EC.Lim YC, et al. Among authors: choi ec.Arch Otolaryngol Head Neck Surg. 2004 Sep;130(9):1088-91. doi: 10.1001/archotol.130.9.1088.Arch Otolaryngol Head Neck Surg. 2004.PMID: 15381596
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Lim YC, Son EJ, Kim K, Kim KM, Choi EC.Lim YC, et al. Among authors: choi ec.Acta Otolaryngol. 2005 Jun;125(6):659-63. doi: 10.1080/00016480410025243.Acta Otolaryngol. 2005.PMID: 16076717
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Kim CH, Moon SK, Bae JH, Lee JH, Han JH, Kim K, Choi EC.Kim CH, et al. Among authors: choi ec.Acta Otolaryngol. 2006 Jan;126(1):88-94. doi: 10.1080/00016480510037014.Acta Otolaryngol. 2006.PMID: 16308260