Genetic disorders. (FAQ094). The American College of Obstetricians and Gynecologists. 2014. http://www.acog.org/-/media/For-Patients/faq094.pdf?dmc=1&ts=20141121T1121311785
Greenberg MB, Druzin ML, Gabbe SG. 2012. Antepartum Fetal Evaluation. In Gabbe SG, Niebyl JR, Galan HL, et al (Eds.). Obstetrics: normal and problem pregnancies.(6th ed.) (237-263). Elsevier Health Sciences.
Identification and referral of maternal genetic conditions in pregnancy. Committee
Opinion No. 643. American College of Obstetricians and Gynecologists. Obstet
Gynecol 2015;126:e49–51.