RIA SIMANJUNTAK, D.; MARIA, D. Descriptive study: anemia and concentration levels in elementary school students receiving free nutritional meals. International Journal Of Community Medicine And Public Health, [S. l.], v. 13, n. 9, p. 4850–4852, 2026. DOI: 10.18203/2394-6040.ijcmph20263161. Disponível em: https://www.ijcmph.com/index.php/ijcmph/article/view/16091. Acesso em: 1 sep. 2026.