不同孕期胎盘植入的产前超声诊断及预后影响因素分析
马端兰 张建忠
Diagnosis of prenatal ultrasound for placenta implantation in different pregnant stages and analysis of influence factors on prognosis of placenta implantation
MA Ruilan，ZHANG Jianzhong
中国计划生育学杂志
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2018, (3): 215
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DOI: 10.3969/j.issn.10048189.2018.03.012
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