1. Department of Dermatology and Venereology; Medical University Innsbruck; Innsbruck Austria
2. Institute of Pathology; Medical University Innsbruck; Innsbruck Austria
3. Department of Pathology; Divisions of Dermatology and Dermatopathology; Albany Medical College; Albany New York
4. Department of Dermatology and Allergology; Ludwig Maximilian University; Munich Germany