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Yoo ES, Kim BS, Kim DY, Oh SJ, Kim JC.Yoo ES, et al.Int Neurourol J. 2011 Sep;15(3):143-51. doi: 10.5213/inj.2011.15.3.143. Epub 2011 Sep 30.Int Neurourol J. 2011.PMID: 22087423Free PMC article.