Epidemiological Study Of Occupational Mortality: PDF OnlyA Critique of the Standardized Mortality RatioGaffey, William R. Ph.D. Author Information Director, Health and Epidemiological Studies, Tabershaw/Cooper Associates, EEH, Inc., Berkely, Calif. Journal of Occupational Medicine 18(3):p 157-160, March 1976. Buy ©1976 The American College of Occupational and Environmental Medicine