中国计划生育学杂志
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 β-hCG联合阴道超声诊断异位妊娠临床价值及检出影响因素
江苏省南通市第六人民医院(226001)
Clinical value of the human chorionic gonadotropin level combined with the transvaginal ultrasound for diagnosing their ectopic pregnancy and the influencing factors
The Sixth People's Hospital of Nantong, Nantong, Jiangsu Province, 226001