GUEVARA, Óscar A. Manual de investigación biomédico-clínico. Colombian Journal of Anesthesiology, [S. l.], v. 39, n. 1, p. 140, 2011. Disponível em: https://www.revcolanest.com.co/index.php/rca/article/view/894. Acesso em: 19 apr. 2024.