1. Research Unit; Fundación Academia Española de Dermatología y Venereología; Madrid Spain
2. Dermatology Department; Complexo Hospitalario Universitario de Vigo; Vigo Spain
3. Rheumatology Department; Hospital Clinic; Barcelona Spain
4. Dermatology Department; Hospital Universitario 12 de Octubre; Madrid Spain
5. Rheumatology Department; Hospital Universitario Vall d'Hebron; Barcelona Spain
6. Dermatology Department; Hospital Universitario Infanta Leonor; Madrid Spain
7. Division of Pharmacoepidemiology and Pharmacovigilance; Agencia Española del Medicamento y Productos Sanitarios (AEMPS); Madrid Spain