1. Department of Obstetrics and Gynecology and Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA.
2. Department of Medical Social Sciences, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA.
3. Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA.