1. Presidential address: Sony, Porsche, and vascular surgery in the 21st century 
Jerry Goldstone, MD 
Journal of Vascular Surgery 
Volume 25, Issue 2, Pages (February 1997)
DOI: /S (97)
Copyright © 1997 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

2. Fig. 1
The Quality Management or Shewhart Cycle, also known as PDCA (Plan, Do, Check, Act).
Journal of Vascular Surgery  , DOI: ( /S (97) )
Copyright © 1997 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

3. Fig. 2
W. Edwards Deming.
Journal of Vascular Surgery  , DOI: ( /S (97) )
Copyright © 1997 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions