1Edwards J, Pearson S, Zalzal G. Foregut duplication cyst of the hypopharynx. Arch Otolaryngol Head Neck Surg,2005,131:1112- 1115.
2Qi BQ, Beasley SW, Williams AK. Evidence of a common pathogenesis for foregut duplications and esophageal atresia with tracheo-esophageal fistula. Anat Rec,2001,264:93-100.