1. Ludlow A. A case of obstructed deglutition from a preternatural dilatation of and bag formed in the pharynx. Med Observ Inq. 1769;3:85–101.
2. Stewart K, Sen P. Pharyngeal pouch management: an historical review. J Laryngol Otol. 2016;130(2):116–20.
3. Zenker FA, von Ziemssen H. Diseases of the esophagus. In: Von Ziemssen H, editor. Handbook of special pathology and therapy [in German], vol. 7. Leipzig: FCW Vogel; 1877.
4. Westrin KM, Ergün S, Carlsöö B. Zenker’s diverticulum--a historical review and trends in therapy. Acta Otolaryngol. 1996;116(3):351–60.
5. Bell C. Surgical observations. London: Longmans, Greene and Co; 1816. p. 64–70.