Doan NTT, Vu VD, Tran THL. Effectiveness of health education intervention in improving maternal knowledge of otitis media care for children aged under five. JNS [Internet]. 27 Tháng Giêng 2026 [cited 18 Tháng Tư 2026];9(01):72-8. Available at: https://jns.vn/index.php/journal/article/view/1128