Thi Hong Hanh, N., & My Duyen, N. (2026). DISTRIBUTION OF BMI-FOR-AGE Z-SCORES BY SEX AND GRADE AMONG STUDENTS AT DAI DONG PRIMARY SCHOOL, NGHE AN PROVINCE IN 2025. HNUE Journal of Science: Journal of Natural Sciences, 71(2), 99-109. https://doi.org/10.18173/2354-1059.2026-0025