1. Division of Reproductive Sciences (A.H., A.K., J.D.H., A.B.T., H.N., E.Y.A.), Department of Obstetrics and Gynecology, University of Utah Health Sciences Center, Salt Lake City, Utah 84112
2. Department of Reproductive Medicine (T.H.L., G.F.E.), University of California, San Diego, La Jolla, California 92093