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von Ehr J, von Versen-Höynck F.von Ehr J, et al.Arch Gynecol Obstet. 2016 Oct;294(4):673-9. doi: 10.1007/s00404-016-4178-7. Epub 2016 Aug 13.Arch Gynecol Obstet. 2016.PMID: 27522600Review.