SÁEZ, Hugo. Upper gastrointestinal bleeding in geriatrics. Cirugía del Uruguay, [S. l.], v. 45, n. 4, p. 322–324, 1975. Disponível em: https://replica-revista.scu.org.uy/index.php/cir_urug/article/view/2615. Acesso em: 29 mar. 2026.