TRAN, Thuy Nga, et al. “Geographic Differences in Malnutrition and Food Security: Comparative Study of Urban and Rural Children Aged 0,5 to 11,9 Years”. Vietnam Journal of Nutrition &Amp; Food, vol. 22, no. 3, June 2026, pp. 68-75, doi:10.56283/1859-0381/1042.