1 Division of Reproductive Endocrinology and Infertility, University of Iowa Carver College of Medicine, Iowa City, Iowa.
2 Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, University of Iowa Carver College of Medicine, Iowa City, Iowa.
3 Division of Reproductive Endocrinology and Infertility, Department of Gynecology and Obstetrics, Emory Reproductive Center, Atlanta, Georgia.
4 Colorado Center for Reproductive Medicine, Lone Tree, Colorado.
5 Mount Sinai Fertility, University of Toronto, Toronto, Ontario, Canada.
6 Division of Reproductive Endocrinology, Department of Obstetrics and Gynecology, University of Pennsylvania, Philadelphia, Pennsylvania. Electronic address: adokras@obgyn.upenn.edu.