1. Department of Pathology; Hospital Universitario Fundación Jiménez Díaz; Madrid Spain
2. Departments of Pathology and Dermatology; Hospital Universitario de Salamanca; Salamanca Spain
3. Dermatopathologie Friedrichshafen; Friedrichshafen Germany
4. Department of Dermatology; Hospital Universitario Fundación Jiménez Díaz/Universidad Autónoma de Madrid; Madrid Spain