1. Presidential address: The second-generation vascular surgeon
George Johnson, M.D. 
Journal of Vascular Surgery 
Volume 5, Issue 2, Pages (February 1987)
DOI: / (87)
Copyright © 1987 Society for Vascular Surgery and North American Chapter, International Society for Cardiovascular Surgery Terms and Conditions

2. Fig. 1
Changes in age of the population predicted from 1980 to Data obtained from US Bureau of the Census,
Journal of Vascular Surgery 1987 5, DOI: ( / (87) )
Copyright © 1987 Society for Vascular Surgery and North American Chapter, International Society for Cardiovascular Surgery Terms and Conditions

3. Fig. 2 Mortality rates in the United States.11
Journal of Vascular Surgery 1987 5, DOI: ( / (87) )
Copyright © 1987 Society for Vascular Surgery and North American Chapter, International Society for Cardiovascular Surgery Terms and Conditions