1. Research Unit; Dermatology Unit; Hospital Universitario Virgen Macarena; Avda Dr Fedriani s/n 41009 Seville Spain
2. Department of Public Health and Preventive Medicine; Medicine School; University of Seville; Seville Spain
3. Pathology Unit; Hospital Universitario Virgen Macarena; Seville Spain
4. Dermatology Unit; Hospital Universitario Virgen Macarena; Seville Spain