1. Departments of Endocrinology (P.F.C.), Hospital Montecelo, Pontevedra 36.005-E, Spain
2. Section of Endocrinology (M.A.A., R.V.G.-M.), Hospital Xeral-Cíes, Vigo 36.201-E, Spain
3. Department of Functional Biology and Health Sciences (F.M.F.), University of Vigo, Vigo 36200-E, Spain