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Nahm FS, Kim SH, Kim HS, Shin JW, Yoo SH, Yoon MH, Lee DI, Lee YW, Lee JH, Jeon YH, Jo DH.Nahm FS, et al. Among authors: jeon yh.Korean J Pain. 2013 Jan;26(1):21-6. doi: 10.3344/kjp.2013.26.1.21. Epub 2013 Jan 4.Korean J Pain. 2013.PMID: 23342203Free PMC article.