1. Multivessel off-pump revascularization in octogenarians: early and midterm outcomes 
Robert B Beauford, MD, Daniel J Goldstein, MD, Frederic F Sardari, MD, Ravindra Karanam, MD, Brandon Luk, BS, Thomas W Prendergast, MD, Paul G Burns, MD, Patricia Garland, RN, Chunguang Chen, MD, Onofrio Patafio, MD, Craig R Saunders, MD 
The Annals of Thoracic Surgery 
Volume 76, Issue 1, Pages (July 2003)
DOI: /S (03)

2. Fig 1
Kaplan-Meier actuarial probability of survival for 113 octogenarians who underwent off-pump coronary artery bypass grafting. Mean follow-up was 13.2 ± 7 months. (post-op = postoperative.)
The Annals of Thoracic Surgery  , 12-17DOI: ( /S (03) )