1. Department of Dermatology; University of Münster; Münster; Germany
2. Department of Histology; Medical University of Gdansk; Gdańsk; Poland
3. Laboratory NeuroEndocrinoImmunology; Department of Internal Medicine I; University of Regensburg; Regensburg; Germany
4. Department of Dermatology and Allergy; Hannover Medical School; Hannover; Germany
5. Division of Dermatology of Department of Medicine; Department of Pathology; University of Tennessee Health Science Center; Memphis; TN; USA