Authors' Affiliations: 1Department of Dermatology, Academic Medical Center, University of Amsterdam; 2Department of Pathology; 3Molecular Diagnostic Laboratory; 4Division of Immunology, The Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Amsterdam; 5Department of Clinical Oncology, Leiden University Medical Center, Leiden University; and 6ISA Pharmaceuticals, Leiden, the Netherlands (At 2014-06-01)