Nguyen Thị Thang và c.s. 2023. THE SITUATION OF IMPLEMENTATION OF THE NATIONAL IMMUNIZATION INFORMATION MANAGEMENT SYSTEM IN PHU YEN PROVINCE IN 2021. JOURNAL OF CONTROL VACCINES AND BIOLOGICALS. 3, 3 (tháng 9 2023), 42–49. DOI:https://doi.org/10.56086/jcvb.v3i3.104.