1. Department of Human Biology Institute of Biology Faculty of Biological and Veterinary Sciences Nicolaus Copernicus University Toruń Poland
2. Faculty of Medicine Department of Histology Medical University of Gdańsk Gdańsk Poland
3. Departments of Dermatology University of Alabama at Birmingham Birmingham Alabama USA
4. Graduate Biomedical Sciences Program University of Alabama at Birmingham Birmingham Alabama USA
5. Laboratory Service VA Medical Center at Birmingham Birmingham Alabama USA