ROSSI, E. Introduction to Cluster Randomized Trials. Acta Gastroenterológica Latinoamericana, [S. l.], v. 56, n. 3, p. 261–268, 2026. DOI: 10.52787/agl.v56i3.668. Disponível em: https://actaojs.org.ar/ojs/index.php/acta/article/view/668. Acesso em: 14 nov. 2026.