Also included are step-by-step instructions for operative procedures and diagnostic and therapeutic techniques.

此外包括一步一步是操作的程序和诊断和治疗技术的指示。

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Invasive prenatal diagnostic techniques include amniocentesis, chorionic villus sampling(CVS), fetal blood sampling and embryoscopy. In this article, we introduced the procedures of these met…

该文就介入性宫内诊断技术中的羊膜腔穿刺术、 绒毛活检术、胎儿脐血穿刺术及胎儿镜检查等产前诊断技术的操作和适应症等进行比较和讨论。

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