PeerJ Author 135 Points Contributions by role Author 135 Contributions by subject area Gynecology and Obstetrics Women's Health Yamei Xue PeerJ Author Summary Gynecology & Obstetrics Women's Health PeerJ Contributions Articles 1 January 6, 2020 The effect on twinning rate of transferring double vitrified-warmed embryos in women of advanced reproductive age: a retrospective study Yamei Xue, Kun Li, Songying Zhang https://doi.org/10.7717/peerj.8308 PubMed 31934507