1. Bone Metabolic Unit, Endocrinology and Nutrition Division, Hospital Universitario San Cecilio, Instituto de Investigación Biosanitaria de Granada (Ibs. GRANADA), Granada, Spain.
2. Department of Medicine, University of Granada, Granada, Spain.
3. CIBERFES, Instituto de Salud Carlos III, Madrid, Spain.
4. Unit of Internal Medicine, Hospital Universitario San Cecilio, Granada, Spain.
5. Endocrinology and Nutrition Unit, Complejo Hospitalario Torrecardenas, Almería, Spain.