1. Department of Physiology and Pharmacology (G.M.A., S.L.H., M.V., J.M.C., R.L.G.), West Virginia University, Morgantown, West Virginia 26506
2. Institute of Veterinary, Animal, and Biomedical Sciences (G.M.A.), Massey University, Palmerston North, New Zealand 5301
3. Reproductive Sciences Program and Department of Physiology (H.J.B.), University of Michigan, Ann Arbor, Michigan 48109