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Tan SJ, Lin CK, Fu PT, Liu YL, Sun CC, Chang CC, Yu MH, Lai HC.Tan SJ, et al. Among authors: yu mh.Taiwan J Obstet Gynecol. 2012 Mar;51(1):18-25. doi: 10.1016/j.tjog.2012.01.005.Taiwan J Obstet Gynecol. 2012.PMID: 22482963Free article.