GUPTA, R.; MITTAL, M. A case report on two superimposed foreign body coins in esophagus. International Journal of Research in Medical Sciences, [S. l.], v. 3, n. 8, p. 2150–2152, 2017. DOI: 10.18203/2320-6012.ijrms20150347. Disponível em: https://www.msjonline.org/index.php/ijrms/article/view/1677. Acesso em: 13 oct. 2025.