1. Cardiovascular operations in patients with dialysis-dependent renal failure 
Michael Frenken, MD, Arno Krian, MD 
The Annals of Thoracic Surgery 
Volume 68, Issue 3, Pages (September 1999)
DOI: /S (99)

2. Fig 1
Actuarial survival after operation for coronary artery disease (n = 30, solid circles) and for valvular disease (n = 13, solid triangles). Minimum follow-up was 16 months. Short and long vertical bars represent either 1 or 2 patients, who were lost to analysis, as they were alive at the time of follow-up.
The Annals of Thoracic Surgery  , DOI: ( /S (99) )

3. Fig 2
Late postoperative changes of ischemic symptoms after coronary artery bypass grafting in patients suffering from stable angina preoperatively (top) or unstable angina preoperatively (bottom). The numbers of patients are indicated.
The Annals of Thoracic Surgery  , DOI: ( /S (99) )

4. Fig 3
Late postoperative changes of New York Heart Association (NYHA) functional class after valvular operation. The numbers of patients are indicated.
The Annals of Thoracic Surgery  , DOI: ( /S (99) )