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中国计划生育学杂志
β-hCG比值联合子宫内膜厚度预测早期不明位置妊娠者异位妊娠的临床价值
倪金莲 陈丽华
Prediction of ectopic pregnancy in early pregnancy of unknown location with β-hCG ratio combined endometrial thickness
NI Jinlian, CHEN Lihua
中国计划生育学杂志 . 2014, (6): 403 .