1. Laboratory of Endocrinology (M.G.-L., M.R.-P., V.O., E.V., L.C.G.-M., F.M.), Center for Biomedical Research, Campus As Lagoas-Marcosende, University of Vigo, E-36310 Vigo, Spain
2. Department of Physiology (M.G.-L., P.L.B.), University of Toronto, Toronto, Ontario M5S 1A8, Canada.