Journal of Southern Medical University
Noninvasive prenatal genetic testing in 6804 pregnant women aged less than 35 years with positive results in serum screening
杨兴坤，郭晓玲，钟 进，陈志华，吴水娟
Journal of Southern Medical University . 2019, (11): 1350 -1356 .  DOI: 10.12122/j.issn.1673-4254.2019.11.12