1. Olson Center for Women’s Health , Department of Obstetrics and Gynecology, College of Medicine, , Omaha, NE , USA
2. University of Nebraska Medical Center , Department of Obstetrics and Gynecology, College of Medicine, , Omaha, NE , USA
3. Division of Reproductive & Developmental Sciences , Oregon National Primate Research Center, , Beaverton, OR , USA
4. Oregon Health & Science University , Oregon National Primate Research Center, , Beaverton, OR , USA
5. Department of Obstetrics and Gynecology, School of Medicine, Oregon Health & Science University , Portland, OR , USA
6. Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center , Omaha, NE , USA