Tehran University of Medical Sciences Iranian Journal of Public Health 2251-6085 46 8 2017 07 17 1143 1144 Martin SAMOHÝL Institute of Hygiene, Faculty of Medicine, Comenius University, Bratislava, Slovak Republic Anna NÁDAŽDYOVÁ Dept. of Stomatology and Maxilofacial Surgery, Faculty of Medicine, Comenius University, Bratislava, Slovak Republic Katarína HIROŠOVÁ Institute of Hygiene, Faculty of Medicine, Comenius University, Bratislava, Slovak Republic Diana VONDROVÁ Institute of Hygiene, Faculty of Medicine, Comenius University, Bratislava, Slovak Republic Daniela KRAJČOVÁ Institute of Hygiene, Faculty of Medicine, Comenius University, Bratislava, Slovak Republic Jana JURKOVIČOVÁ Institute of Hygiene, Faculty of Medicine, Comenius University, Bratislava, Slovak Republic 2017 07 17 2017 07 17 Please provide alternate text for this image to ensure accessibility for users with text-only browsers or assistive devices. https://ijph.tums.ac.ir/index.php/ijph/article/view/10618 https://ijph.tums.ac.ir/index.php/ijph/article/download/10618/5264