Estefan, A. and Chifflet, J. (1972) “Ingestion of lodged foreign bodies in the stomach and duodenum: about 6 observations solved surgically”, Cirugía del Uruguay, 42(6), pp. 403–406. Available at: https://replica-revista.scu.org.uy/index.php/cir_urug/article/view/2288 (Accessed: 23 May 2026).