1. Division of Oncology and Pathology; Department of Clinical Sciences Lund; Lund University; Lund Sweden
2. Universitat Autònoma de Barcelona; Barcelona Spain
3. Department of Pathology; Hospital Universitari Germans Trias i Pujol; Universitat Autònoma de Barcelona; Barcelona Spain
4. Department of Dermatology; Hospital Universitari Germans Trias i Pujol; Universitat Autònoma de Barcelona; Barcelona Spain
5. Department of Pathology; Hospital Universitari General de Catalunya-QuironSalud; Universitat Autònoma de Barcelona; Barcelona Spain