title: Does timing of biochemistry in first-trimester aneuploidy risk assessment affect the gestational age at prenatal diagnosis and pregnancy termination?
authors.affiliation: Department of Obstetrics and Gynecology, Weill Medical College of Cornell University, New York, NY 10065, USA. stchasen@med.cornell.edu
authors.forename: Stephen T
authors.initials: ST
authors.lastname: Chasen
authors.forename: David
authors.initials: D
authors.lastname: Krantz