[1] Kazakh Natl Med Univ, Dept Publ Hlth, Alma Ata, Kazakhstan
[2] South Kazakhstan Med Acad, Dept Gen Practitioner N2, Shymkent, Kazakhstan
[3] NJSC Astana Med Univ, Dept Publ Hlth & Hyg, Nur Sultan, Kazakhstan
[4] RSU Natl Bank Republ Kazakhstan, Dept Accounting, Nur Sultan, Kazakhstan
[5] NJSC Astana Med Univ, Dept Publ Hlth & Management, Nur Sultan, Kazakhstan