CHAVARRÍA CHAVARRÍA, Tatiana. Development and implementation of a validation tool for medical bills and disallowance management in the health sector in Colombia. Medicina UPB, [S. l.], v. 37, n. 2, p. 131–141, 2018. DOI: 10.18566/medupb.v37n2.a07. Disponível em: https://revistas.upb.edu.co/index.php/medicina/article/view/855. Acesso em: 4 jul. 2026.