1. Department of Dermatology; The University of Texas, MD Anderson Cancer Center; Houston Texas U.S.A.
2. Department of Dermatology; Paracelsus Medical University; Salzburg Austria
3. Departments of Pathology and Translational and Molecular Pathology; The University of Texas, MD Anderson Cancer Center; Houston Texas U.S.A.
4. Departments of Pathology and Dermatology; The University of Texas, MD Anderson Cancer Center; Houston Texas U.S.A.