Assessment of IVF oocyte maturation and embryonic development by bone morphogenetic protein9 of granulosa cells
LIU Can， WANG Hui， LI Yi， ZHANG Ping， JIANG Qian， ZHEN Xiuli*
Journal of Hebei Medical University . 2018, (4): 425 -430 .  DOI: 10.3969/j.issn.10073205.2018.04.013