1. Department of Cell Biology, Genetics, Histology, and Pharmacology, Faculty of Medicine, University of Valladolid, 47003 Valladolid, Spain
2. IOBA, University of Valladolid, 47011 Valladolid, Spain
3. Service of Internal Medicine, Río Hortega University Hospital, 47012 Valladolid, Spain
4. Department of Medicine, Dermatology and Toxicology, Faculty of Medicine, University of Valladolid, 47003 Valladolid, Spain