1. Rheumatology Department, Hospital Universitario Central de Asturias (HUCA), C/Celestino Villamil s/n, Oviedo, 33006 Asturias, Spain
2. Psoriasis Unit, Hospital Universitario Central de Asturias (HUCA), Oviedo, Asturias, Spain
3. Dermatology Department, Hospital Universitario Central de Asturias (HUCA), Oviedo, Asturias, Spain
4. Clinical Epidemiology Unit, BIODONOSTIA, San Sebastian, Basque Country, Spain
5. Department of Functional Biology, Oviedo University School of Medicine, Oviedo, Asturias, Spain
6. Immunology Service, HUCA, Oviedo, Asturias, Spain