Fetal fraction-based risk algorithm for non-invasive prenatal testing: screening for trisomy 13, 18, and triploidy in women with low cell-fr

Ultrasound in Obstetrics and Gynecology

McKanna T, Ryan A, Krinshpun S, Kareht S, Marchand K, Grabarits C, Ali M, McElheny A, Gardiner K, LeChien K, Hsu M, Saltzman D, Stosic M, Martin K, Benn P Ultrasound Obstet. Gynecol. 2019 Jan;53(1):73-79.