THE CURRENT STATUS OF FULL AND TIMELY EXPANDED PROGRAM ON IMMUNIZATION COVERAGE AMONG CHILDREN UNDER 12 MONTHS OF AGE IN QUYNH MAI WARD, HAI BA TRUNG DISTRICT, HANOI CITY IN 2025 AND RELATED FACTORS. YHCĐ [Internet]. 2026 Mar. 5 [cited 2026 Sept. 8];67(CĐ2-NCKH). Available from: https://tapchiyhcd.vn/index.php/yhcd/article/view/4473