Simpson Lynn L
Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, Columbia University Medical Center, 622 W 168th St, PH-16, New York, NY 10032.
Semin Perinatol. 2014 Aug;38(5):235. doi: 10.1053/j.semperi.2014.04.010. Epub 2014 Jun 25.