中国计划生育学杂志
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血清β-hCG水平与异位妊娠发生概率分析
安徽省霍邱县第一人民医院(237400)
Analysis of the serum β- human chorionic gonadotropin level of pregnant women and the probability of their ectopic pregnancy occurrence
The First People's Hospital of Huoqiu County, Lu'an, Anhui Province, 237400