Association of number and quality of embryos transferred with early pregnancy loss in infertile women at an advanced age undergoing frozen-thawed embryo transfer
张庆颜, 张 俊, 周星宇, 黎 莹, 陈映雪, 陈 薪, 陈士岭
Journal of Southern Medical University . 2021, (7): 1050 -1055 .  DOI: 10.12122/j.issn.1673-4254.2021.07.12