中国计划生育学杂志
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血清hCG、孕酮水平与复发性早期妊娠流产相关性探讨#br#
西安交通大学第一附属医院
Study of the relationship between level of serum HCG or progesterone with recurrent early spontaneous miscarriage
The First Hospital Affiliated To Xi'an Jiaotong University, Xi'an, Shaanxi