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Liu BY, Wang CC, Lau TK, Chu CY, Phil M, Pang CP, Rogers MS, Leung TN.Liu BY, et al. Among authors: leung tn.Am J Obstet Gynecol. 2005 Jan;192(1):289-94. doi: 10.1016/j.ajog.2004.06.083.Am J Obstet Gynecol. 2005.PMID: 15672038