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APA Citation
Chen, L., Ni, X., Xu, Z., Fang, J., Zhang, N., & Li, D. (2020). effect of frozen and fresh embryo transfers on the birthweight of live-born twins. European journal of obstetrics, gynecology, and reproductive biology, 246, 50–54. http://access.bl.uk/ark:/81055/vdc_100101475767.0x00003f