1. Department of Dermatology School of Medicine University Clinic of NavarraUniversity of Navarra Pamplona Spain
2. Department of Dermatology Hospital Germans Trias i Pujol Universitat Autònoma de Barcelona Badalona Spain
3. Department of Dermatology Hospital Clínic de Barcelona University of Barcelona Barcelona Spain
4. Department of Pathology Hospital Germans Trias i Pujol University Universitat Autònoma de Barcelona Badalona Spain
5. Department of Pathology School of Medicine University Clinic of NavarraUniversity of Navarra Pamplona Spain