1. Department of Dermatology Hospital Universitario de la Princesa Madrid Spain
2. Department of Dermatology Complejo Hospitalario de Navarra Pamplona Spain
3. Department of Dermatology Hospital Universitario del 12 de octubre Madrid Spain
4. Department of Pathology Hospital Universitario Fundación Alcorcón Madrid Spain
5. Department of Pathology Hospital Universitario de Móstoles Madrid Spain
6. Department of Dermatology Hospital Universitario de Móstoles Madrid Spain