1. Department of Obstetrics, Gynecology, and Reproductive Sciences and Center for Reproductive Science and Medicine University of California, San Diego La Jolla CA USA
2. Center for Circadian Biology University of California, San Diego La Jolla CA USA
3. Department of Animal Science and the Reproductive and Developmental Sciences Program Michigan State University East Lansing MI USA
4. CANR Statistical Consulting Center Michigan State University East Lansing MI USA
5. Department of Psychology University of California, San Diego La Jolla CA USA
6. Department of Psychiatry University of California, San Diego La Jolla CA USA
7. Veterans Affairs San Diego Healthcare System San Diego CA USA