1. Zenker’s diverticulum in the elderly: is operation justified?
Donald G. Crescenzo, MD, Victor F. Trastek, MD, Mark S. Allen, MD, Claude Deschamps, MD, Peter C. Pairolero, MD 
The Annals of Thoracic Surgery 
Volume 66, Issue 2, Pages (August 1998)
DOI: /S (98)

2. Fig 1
Postoperative results in 75 patients undergoing correction for symptomatic Zenker’s diverticulum. Follow-up was complete in 72 patients (96%) and ranged from 8 days to 17 years (median, 3.3 years). Sixty-four patients (88%) were asymptomatic, 4 (6%) had mild symptoms, and 4 continued to have dysphagia. Three patients were lost to follow-up.
The Annals of Thoracic Surgery  , DOI: ( /S (98) )