[1] Univ Belgrade, Fac Med, Sch Publ Hlth & Hlth Management, Belgrade, Serbia
[2] Univ Belgrade, Fac Med, Inst Social Med, Belgrade, Serbia
[3] Univ Kragujevac, Fac Med Sci, Kragujevac, Serbia
[4] Univ Childrens Hosp, Phys Med & Rehabil, Belgrade, Serbia
[5] Directorate Primary Hlth Care Ctr Dr Simo Milosev, Belgrade, Serbia
[6] Univ Belgrade, Fac Med, Univ Clin Ctr Serbia, Belgrade, Serbia
[7] Univ Clin Ctr Serbia, Clin Hematol, Belgrade, Serbia