Nguyen HTL, Nguyen DPL, Tran TML, Tran XMT. Early childhood developmental status and its associated factors among children aged 36 - 59 months in Vietnam: A comparison of two nationally representative surveys. HUEJMP [Internet]. 25 Tháng Tám 2026 [cited 26 Tháng Tám 2026];16(04):155-62. Available at: https://www.huejmp.vn/index.php/journal/article/view/1073