RAFIQ, S. Frequency and Determinants of Ultra-Processed Foods in the Lunchboxes of Under-12 Students in Urban Pakistan: A Cross-Sectional Survey: Determinants of Ultra-Processed Foods in the Lunchboxes of Under-12 Students. Pakistan BioMedical Journal, [S. l.], v. 9, n. 5, p. 29–32, 2026. DOI: 10.54393/pbmj.v9i5.1392. Disponível em: https://www.pakistanbmj.com/journal/index.php/pbmj/article/view/1392. Acesso em: 6 aug. 2026.