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Moran P, Davison JM.Moran P, et al. Among authors: davison jm.Baillieres Best Pract Res Clin Obstet Gynaecol. 1999 Mar;13(1):77-93. doi: 10.1053/beog.1999.0007.Baillieres Best Pract Res Clin Obstet Gynaecol. 1999.PMID: 10746094Review.