1. From the Department of Anatomical Pathology, Marques de Valdecilla University Hospital, Medical Faculty, University of Cantabria, Santander, Spain
2. From the Department of Services of Dermatology, Marques de Valdecilla University Hospital, Medical Faculty, University of Cantabria, Santander, Spain
3. From the Department of Rheumatology, Marques de Valdecilla University Hospital, Medical Faculty, University of Cantabria, Santander, Spain