[1]中国出生缺陷防治报告(2012)[R].北京：中华人民共和国卫生部，2012

[2] 刘春林, 陈培松, 何小洪, 等. 4723 例孕妇外周血无创 DNA 筛查在产前诊断中的应用[J]. 中国妇幼保健, 2020, 35(21): 4055-4059.]

[3] Wu L, Wu Y, Zou S, et al. Eliciting women’s preference for prenatal testing in China: a discrete choice experiment[J]. BMC pregnancy and childbirth, 2020, 20(1): 1-8.

[4] O'Leary P, Maxwell S, Murch A, et al. Prenatal screening for D own syndrome in A ustralia: costs and benefits of current and novel screening strategies[J]. Australian and New Zealand Journal of Obstetrics and Gynaecology, 2013, 53(5): 425-433.

[5]Ashoor G, Syngelaki A, Poon L C Y, et al. Fetal fraction in maternal plasma cell‐free DNA at 11–13 weeks' gestation: relation to maternal and fetal characteristics[J]. Ultrasound in Obstetrics & Gynecology, 2013, 41(1): 26-32.

[6] Gil M M, Accurti V, Santacruz B, et al. Analysis of cell‐free DNA in maternal blood in screening for aneuploidies: updated meta‐analysis[J]. Ultrasound in Obstetrics & Gynecology, 2017, 50(3): 302-314.