1. Comparability of mortality statistics for the 5th and 6th revisions: United States, 1950;U.S. Department of Health, Education and Welfare, Public Health Service;Vital Statistics—Spec. Rep.,1963
2. Changing mortality in the types of heart disease;Metropolitan Life Insurance Co.;Statist. Bull.,1962
3. Changes in mortality rates of treated hypertensive patients in a decade;Kinsey;Geriatrics,1961
4. Personal communication from Dr. Paul D. White.