Study on the Relationship between the Number and Grade of Embryo Transfer and Pregnancy Outcome in Assisted Reproductive Technology

SU Min, YOU Min, ZHANG Hong-mei, WANG Li-yuan, TU Zeng-rong, TIAN Xiu-zhu

Journal of International Reproductive Health/Family Planning . 2021, (1): 6 -10 . DOI: 10.12280/gjszjk.20200311