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Johnson P, Larson KA, Hsu Y, Fenner DE, Morgan D, Delancey JO.Johnson P, et al. Among authors: hsu y.Int J Gynaecol Obstet. 2013 Jan;120(1):53-6. doi: 10.1016/j.ijgo.2012.07.024. Epub 2012 Oct 14.Int J Gynaecol Obstet. 2013.PMID: 23073228Free PMC article.
DeLancey JO, Morgan DM, Fenner DE, Kearney R, Guire K, Miller JM, Hussain H, Umek W, Hsu Y, Ashton-Miller JA.DeLancey JO, et al. Among authors: hsu y.Obstet Gynecol. 2007 Feb;109(2 Pt 1):295-302. doi: 10.1097/01.AOG.0000250901.57095.ba.Obstet Gynecol. 2007.PMID: 17267827