1. Gardner JW, Sanborn JS. Years of potential life lost (YPLL)--what does it measure? Epidemiology. 1990 Jul;1(4):322-9.
2. Public Health Agency of Canada Steering Committee on Health-Adjusted Life Expectancy. Report summary - Health-Adjusted Life Expectancy in Canada: 2012 Report by the Public Health Agency of Canada. Chronic Dis Inj Can. 2013 Mar;33(2):103.