1. Department of Dermatovenerology, Faculty Hospital Královské Vinohrady, Third Faculty of Medicine, Charles University, Prague, Czech Republic
2. Department of Pharmacology, Second Faculty of Medicine, Charles University, Prague, Czech Republic
3. St. John Nepomucene Neumann Institute, Příbram, Czech Republic; St. Elisabeth University of Health Care and Social Work, Bratislava, Slovak Republic
4. Department of Dermatovenerology, Na Bulovce Hospital, Second Faculty of Medicine, Charles University, Prague, Czech Republic
5. Department of Pharmacology, First Faculty of Medicine, Charles University, Prague, Czech Republic
6. Department of Statistics and Operation Analysis, Faculty of Business and Economics of Brno, Mendel University, Brno, Czech Republic
7. Department of Dermatovenerology, Second Faculty of Medicine, Charles University, Prague, Czech Republic