1. Committee Opinion No. 581: the use of chromosomal microarray analysis in prenatal diagnosis;American College of Obstetricians and Gynecologists Committee on Genetics;Obstet Gynecol,2013
2. Committee Opinion 640: cell-free DNA screening for fetal aneuploidy;American College of Obstetricians and Gynecologists;Obstet Gynecol,2015
3. Practice Bulletin No. 163: screening for fetal aneuploidy;American College of Obstetricians and Gynecologists Committee on Practice Bulletins—Obstetrics;Obstet Gynecol,2016
4. AIUM practice guideline for the performance of obstetric ultrasound examinations;American Institute of Ultrasound in Medicine;J Ultrasound Med,2013
5. Guidelines for the prenatal diagnosis of fetal skeletal dysplasias;Krakow;Genet Med,2009