[1] University Hospital in Hradec Kralove,Department of Dentistry, Faculty of Medicine Charles University
[2] University Hospital in Hradec Kralove,Department of Paediatrics, Faculty of Medicine Charles University
[3] University Hospital in Hradec Kralove,Department of Microbiology and Clinical Immunology, Faculty of Medicine Charles University
[4] Charles University and General University Hospital in Prague,Institute of Clinical and Experimental Dental Medicine, 1st Faculty of Medicine
[5] University Hospital in Pilsen,Depatrment of Dentistry, Faculty of Medicine Charles University