“21. THE SITUATION OF FULL, ON-SCHEDULED IMMUNIZATION FOR CHILDREN UNDER ONE YEAR OLD IN FOUR COMMUNES OF YEN CHAU DISTRICT, SON LA PROVINCE IN 2023”. Vietnam Journal of Community Medicine 64, no. 5 (August 23, 2023). Accessed November 9, 2026. https://tapchiyhcd.vn/index.php/yhcd/article/view/778.