1. Department of Comparative Biosciences , School of Veterinary Medicine, , Madison, WI, USA
2. University of Wisconsin-Madison , School of Veterinary Medicine, , Madison, WI, USA
3. Department of Obstetrics and Gynecology , School of Medicine and Public Health, , Madison, WI, USA
4. University of Wisconsin-Madison , School of Medicine and Public Health, , Madison, WI, USA
5. Endocrinology-Reproductive Physiology Program, University of Wisconsin-Madison , Madison, WI, USA
6. Wisconsin National Primate Research Center, University of Wisconsin-Madison , Madison, WI, USA