1. Reproductive Neuroscience Unit (T.L.H., S.D.), Yale Medical School, New Haven, Connecticut 06520
2. Department of Obstetrics and Gynecology and Department of Neurobiology (T.L.H.), Yale Medical School, New Haven, Connecticut 06520
3. Department of Anatomy and Histology (P.S.), Faculty of Veterinary Science, Szent Istvan University, Budapest, Hungary 1400
4. Lilly Research Laboratories (M.H., M.T.), Eli Lilly & Co., Indianapolis, Indiana 46285