Influencing factors of secondary sex ratio at birth after in-vitro fertilization and embryo transfer
Ni Yunping, Hong Ruifang, Lu Shan, Chen Xulong, Deng Xuemei, Yuan Qilong
International Medicine and Health Guidance News . 2022, (15): 2154 -2159 .  DOI: 10.3760/cma.j.issn.1007-1245.2022.15.019

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