1. From the Department of Dermatology, Hospital Universitario San Cecilio, Granada, Spain.
2. Department of Dermatology, Hospital Universitario Reina Sofía, Córdoba, Spain.
3. Department of Dermatology, Hospital Universitario Puerto Real, Cádiz, Spain.
4. Department of Dermatology, Hospital Universitario Virgen del Rocío, Sevilla, Spain.