1. Laboratory of Pathology; Clínica Reina Sofia; Bogotá Colombia
2. Department of Dermatology; Goethe University Hospital; Frankfurt Germany
3. Department of Dermatology; City Clinic Ludwigshafen am Rhein gGmbH; Ludwigshafen Germany
4. Dermatology Practice; Münster Germany
5. Department of Dermatology; Charles Nicolle Hospital; Tunis Tunisia
6. Department of Dermatology; Münster University; Münster Germany
7. Department of Dermatopathology; Dermatologikum Hamburg; Hamburg Germany