Sociodemographic profile, motivations, and barriers of blood donors: a cross-sectional study. Saúde & Tecnologia, [S. l.], p. e904, 2025. DOI: 10.25758/set.904. Disponível em: https://journals.ipl.pt/stecnologia/article/view/904.. Acesso em: 13 jan. 2026.