1. Department of Dermatology and Allergology; Academic Teaching Hospital Dresden-Friedrichstadt; Dresden; Germany
2. Department of Internal Medicine, Division of Rheumatology and Osteology; Academic Teaching Hospital Dresden-Friedrichstadt; Dresden; Germany
3. Institute of Pathology “Georg Schmorl”; Academic Teaching Hospital Dresden-Friedrichstadt; Dresden; Germany
4. Center for Physical and Rehabilitative Medicine; Academic Teaching Hospital Dresden-Friedrichstadt; Dresden; Germany