1. Department of Dermatology Hospital Universitario Fundación Jiménez Díaz, Universidad Autónoma Madrid Spain
2. Department of Pathology Hospital Universitario Fundación Jiménez Díaz, Universidad Autónoma Madrid Spain
3. Department of Pathology Hospital Universitario Son Espases Palma de Mallorca Spain
4. Department of Pathology Hospital San Pedro de Alcántara Cáceres Spain