1. National Primate Research Center (D.K.B., T.M.B., D.H.A.), University of Wisconsin, Madison, Wisconsin 53715
2. Medical Research Council Human Reproduction Sciences Unit (R.P.M.), EH3 9ET Edinburgh, Scotland, United Kingdom
3. Endocrinology-Reproductive Physiology Training Program (D.H.A.), University of Wisconsin, Madison, Wisconsin 53706
4. Department of Obstetrics and Gynecology (D.H.A.), University of Wisconsin, Madison, Wisconsin 53792