1. Department of Dermatology; Medical University of Warsaw; Warsaw Poland
2. Department of Dermatology and Venereology; Medical University of Lodz; Lodz Poland
3. Department of Social Sciences; University of Social Sciences; Lodz Poland
4. Department of Dermatology; University of North Carolina; Chapel Hill NC USA
5. Private Practice; Rutland VT USA
6. Department of Pathophysiology and Immunology; Institute of Rheumatology; Warsaw Poland