LUO, Renfu et al. Anaemia among Students of Rural China’s Elementary Schools: Prevalence and Correlates in Ningxia and Qinghai’s Poor Counties. Journal of Health, Population and Nutrition, [S. l.], v. 29, n. 5, p. 471–485, 2011. DOI: 10.3329/jhpn.v29i5.8901. Disponível em: https://www.banglajol.info/index.php/JHPN/article/view/8901. Acesso em: 8 oct. 2025.