1. Esophageal foreign bodies;Sittitrai;J. Med. Assoc. Thai.,2000
2. Oesophageal foreign bodies in children;Pokharel;JNMA J. Nepal Med. Assoc.,2008
3. Management of esophageal coins;Waltzman;Curr. Opin. Pediatr.,2006
4. Esophageal foreign bodies: 177 cases;Nadir;Dis. Esophagus,2010
5. The management of ingested foreign bodies in children—a review of 663 cases;Panieri;Eur. J. Emerg. Med.,1995