Is there an optimal gestation for ultrasound examination of fetal nasal bone in the first trimester? 期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Is there an optimal gestation for ultrasound examination of fetal nasal bone in the first trimester?

作者姓名：	Hui PW Lee CP Leung WC Tang MH

摘要：
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