A study on the impact of smartphone use on haematological and cardiovascular parameters in the adult population: A cross-sectional study. Student’s Journal of Health Research Africa, Africa, v. 6, n. 3, p. 6, 2025. DOI: 10.51168/sjhrafrica.v6i3.1666. Disponível em: https://www.sjhrafrica.org.sjhresearchafrica.org/index.php/public-html/article/view/1666. Acesso em: 25 jul. 2026.