1. Department of Dermatology; Complejo Hospitalario Universitario Ferrol; A Coruña 15405 Spain
2. Department of Dermatology; Complejo Hospitalario Universitario Santiago; Avenida da residencia s/n. Hospital Naval; Ferrol A Coruña 15405 Spain
3. Department of Pathology; Complejo Hospitalario Universitario Santiago; Avenida da residencia s/n. Hospital Naval; Ferrol A Coruña 15405 Spain