1. Department of Dermatology Hospital Clínico Lozano Blesa Zaragoza Spain
2. Department of Pathology Fundación Jimenez Diaz Madrid Spain
3. Department of Dermatology Fundación Jimenez Diaz Madrid Spain
4. Department of Pathology Hospital Universitario La Paz Madrid Spain
5. Department of Pathology Hospital Clínico Lozano Blesa Zaragoza Spain