1. Department of Dermatology; Instituto de Investigación Sanitaria Princesa (IIS-IP); Hospital Universitario de la Princesa; Madrid Spain
2. Independent Researcher in Health Services Research; Madrid Spain
3. Department of Cardiology; Hospital Clínico Universitario de Valencia; Valencia Spain
4. Department of Dermatology; Hospital Universitario la Fe; Valencia Spain
5. Department of Dermatology; Hospital Universitari Germans Trias i Pujol; Universitat Autònoma de Barcelona; Badalona Spain
6. Department of Nephrology; Fundación Jiménez Díaz; Madrid Spain
7. Department of Endocrinology & Clinical Nutrition; Hospitales Universitarios Quirón Madrid & Ruber Juan Bravo; Universidad Europea de Madrid; Madrid Spain
8. Department of Rheumatology; Hospital Universitario 12 de Octubre; Madrid Spain
9. Department of Gastroenterology and Hepatology; Hospital La Paz; Madrid Spain
10. Department of Psychiatry; Hospital Infanta Leonor; Madrid Spain
11. Department of Dermatology; Hospital Universitario 12 de Octubre; Madrid Spain