1. Institute of Public Health of Vojvodina , Futoška 121 , Novi Sad , Serbia
2. Department of Epidemiology, Faculty of Medicine , University of Novi Sad , Hajduk Veljkova 3 , Novi Sad , Serbia
3. Department of Social Medicine and Health Statistics with Informatics, Faculty of Medicine , Univerisity of Novi Sad , Hajduk Veljkova 3 , Novi Sad , Serbia
4. Clinical Center of Vojvodina , Hajduk Veljkova 1-9 , Novi Sad , Serbia
5. In concept , Hrastova 4 , Sremska Kamenica , Serbia