[1] Univ Duisburg Essen, Univ Hosp, Dept Dermatol, D-45147 Essen, Germany
[2] Mem Sloan Kettering Canc Ctr, Dept Pathol, New York, NY 10065 USA
[3] Mem Sloan Kettering Canc Ctr, Human Oncol & Pathogenesis Program, New York, NY 10065 USA
[4] Univ Duisburg Essen, Univ Hosp, Dept Ophthalmol, D-45147 Essen, Germany
[5] Univ Tubingen Hosp, Dept Ophthalmol, D-72076 Tubingen, Germany
[6] Univ Duisburg Essen, Univ Hosp, Inst Pathol & Neuropathol, D-45147 Essen, Germany
[7] Univ Duisburg Essen, Univ Hosp, Inst Human Genet, D-45147 Essen, Germany