1. Agrarian Technological Institute of Castilla and Leon (ITACyL), Ctra. Burgos Km 119, Finca Zamadueñas, 47071 Valladolid, Spain
2. Endocrinology and Nutrition Research Centre, Medicine School, Service of Endocrinology and Nutrition, Universitary Clinic Hospital of Valladolid, University of Valladolid, Av. Ramón y Cajal, 3, 47003 Valladolid, Spain