1. Holinger LD. Management of sharp and penetrating foreign bodies of the upper aero-digestive tract. Ann Otol Rhinol Laryngol 1990. 99: 684-8.
2. Murty P, Vijendra Si, Ramakrishna S, Fahim As, Varghese P. Foreign bodies in the upper aero-digestive tract. SQU Journal for Scientific Research 2001. 3(2): 117-20.
3. American society for Gastrointestinal endoscopy. Guideline for the management of ingested foreign bodies. Gastrointest Endosc 2002. 55: 802-6.
4. Murty P, Ingle VS, Ramakrishna S, Shah FA, Varghese P. Foreign bodies in the upper aero-digestive tract. J Sci Res Med 2001. 3(2):117-20.
5. Lachaux A, Letard JC, Laugier R, Gay G, Arpurt JP, Boustière C, et al. Recommendations of the French Society of Digestive Endoscopy. The ingested foreign bodies. Acta Endosc 2007. 37:91-3.
6. Wilson RT, Dean PJ, Lewis M. Aortoesophageal fistula due to a foreign body. Gastrointest Endosc 1987. 33: 448-50.
7. Connolly AA, Birchall M, Walsh-Waring GP, Moore-Gillon V. Ingested foreign bodies: patient guided localization is a useful clinical tool. Clin Otolaryngol 1992. 17:520-4.
8. Ikenberry SO, Jue TL, Anderson MA, Appalaneni V, Banerjee S, Ben-Menachem T, et al. Management of ingested foreign bodies and food impactions. Gastrointest Endosc 2011. 73(6): 1085-91.
9. Takada M, Kashiwagi R, Sakane M, Tabata F, Kuroda Y. 3D-CT diagnosis for ingested foreign bodies. Am J Emerg Med 2000.18:192-3.
10. Biswas B, Datta R. retained oesophageal foreign bodies – report of three cases. Indian J Otolaryngol Head Neck Surg 1999. 51(Suppl 1): 15-8.
11. Gmeiner D, von Rahden BH, Meco C, Hutter J, Oberascher G, Stein HJ. Flexible versus rigid endoscopy for treatment of foreign body impaction in the esophagus. Surg Endosc 2007. 21: 2026-9.
12. Lesur G, Vedrenne B, Heresbach D, Arpurt JP, laugier R. Consensus in digestive endoscopy. Materials and conditions for emergency endoscopy. Acta Endosc 2009. 39(6): 468–73.
13. Herranz-Gonzalez J, Martinez-Vidal J, Bardin-Saranderesa C, Vazquez-Barro C. Esophageal foreign bodies in adults. Otolaryngol Head Neck Surg 1991.105: 649-54.
14. Rosch W, Classen M. Fiberendoscopic foreign body removal from the upper gastrointestinal tract. Endoscopy 1972. 4: 193-7.
15. Smith MT, Wong RK. Foreign bodies. Gastrointest Endosc Clin N Am 2007. 17(2):361-82.