1 Endocrinology and Nutrition Department, Hospital Universitario Ramón y Cajal, Madrid, Spain; Instituto de Investigación Biomédica Ramón y Cajal (IRYCIS), Madrid, Spain. marta.araujo@salud.madrid.org
2 Biochemical Department, Hospital Universitario Ramón y Cajal, Madrid, Spain
3 Endocrinology and Nutrition Department, Hospital Reina Sofia, Córdoba, Spain
4 Maimonides Institute for Biomedical Research of Cordoba (IMIBIC), Córdoba, Spain