RUBIO, Roberto. Cardiospasm (achalasia): about 2 observations. Cirugía del Uruguay, [S. l.], v. 29, n. 2-3, p. 189–215, 2020. Disponível em: https://replica-revista.scu.org.uy/index.php/cir_urug/article/view/1460. Acesso em: 29 may. 2026.