PRAVIA, Juan C. Mega esophagus: dilatation treatment of the heart (intragastric route) by Hegar spark plugs. Cirugía del Uruguay, [S. l.], v. 14, n. 11-12, p. 717–725, 2020. Disponível em: https://replica-revista.scu.org.uy/index.php/cir_urug/article/view/691. Acesso em: 23 may. 2026.