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Pinas A, Chandraharan E.Pinas A, et al. Among authors: chandraharan e.Best Pract Res Clin Obstet Gynaecol. 2016 Jan;30:33-47. doi: 10.1016/j.bpobgyn.2015.03.022. Epub 2015 Jun 25.Best Pract Res Clin Obstet Gynaecol. 2016.PMID: 26165747Review.