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Porat N, Boehnlein LM, Schouweiler CM, Kang J, Lindheim SR.Porat N, et al. Among authors: lindheim sr.J Obstet Gynaecol Res. 2010 Apr;36(2):384-92. doi: 10.1111/j.1447-0756.2009.01148.x.J Obstet Gynaecol Res. 2010.PMID: 20492392Clinical Trial.