Analysis of indications and results of non-invasive prenatal testing in 23852 pregnant women from Guangdong Province 
Peng Haishan, Huang Huajie, Yang Jiexia, Hou Yaping, Guo Fangfang, Qi Yiming, Yin Aihua
JOURNAL OF NEW MEDICINE . 2018, (12): 878 -883 .  DOI: 10.3969/j.issn.0253-9802.2018.12.007