1. Department of Stomatology; 1st Faculty of Medicine; Charles University in Prague and General University Hospital in Prague; Kateřinská 32, 121 08 Prague 2 Czech Republic
2. Department of Paediatric Stomatology; 2nd Faculty of Medicine; Charles University in Prague and Faculty Hospital in Motol; V Uvalu 84, 15006 Prague 5 Czech Republic
3. 1st Faculty of Medicine; Institute of Clinical and Experimental Stomatology, Charles University in Prague and General University Hospitalin Prague; Karlovo nam 32, 121 11 Prague 2 Czech Republic