1. National Center for Health Statistics. Health, United States, 2010 with special feature on death and dying. Hyattsville: US Department of Health and Human Services; 2011.
2. US Department of Health, Education, and Welfare. Vital statistics of the United States 1950, volume I. Washington, DC: US Government Printing Office; 1954.
3. Grove RD, Hetzel AM. Vital statistics rates in the United States, 1940–1960. National Center for Health Statistics. Washington, DC: US Government Printing Office; 1968.
4. Kitagawa EM, Hauser PM. Differential mortality in the United States: a study in socioeconomic epidemiology. Cambridge, UK: Harvard University Press; 1973.
5. Singh GK. Area deprivation and widening inequalities in US mortality, 1969–1998. Am J Public Health. 2003; 93(7): 1137–43.