1. Department of Pathology, Hospital Clinic of Barcelona , Barcelona , Spain
2. University of Barcelona. Barcelona , Spain
3. August Pi i Sunyer Biomedical Research Institute (IDIBAPS) , Barcelona , Spain
4. Department of Pathology, University of Barcelona , Barcelona , Spain
5. University of Barcelona . Barcelona , Spain
6. Section of Anatomical Pathology, Department of Health Sciences, University of Florence. Florence , Italy
7. European Organisation for Research and Treatment of Cancer (EORTC), Melanoma Group
8. Department of Dermatology, Hospital Clinic of Barcelona , Barcelona , Spain
9. Department of Opthamology, Hospital Clinic of Barcelona , Barcelona , Spain