伟博丽 2021-10-15 06:10 开发者_JS百科无创产前基因检测的适宜孕周是12-24孕周。12周开始检测是因为胎儿DNA浓度比较高,满足了检测要求,不过由于个体差异,有少数宝妈需要重抽血;在24孕周前检测是为了避免部
I have two share point web sites. One is a child web site of the other.For example if my first site is myweb1, other one is myweb1/myweb2.