Risk of infection by Hepatitis B virus in medical students of the city of Cartagena Colombia. Ciencia y Salud Virtual, [S. l.], v. 1, n. 1, p. 32–37, 2009. DOI: 10.22519/21455333.156. Disponível em: https://revistas.uninunez.edu.co/cienciaysalud/article/view/156. Acesso em: 15 jun. 2026.