1. US Census Bureau. Population by Age, Sex, Race, and Hispanic or Latino Origin for the United States: 2000 (PHC-T-9). Revised 7/31/02. Available at: http://www.census.gov/population/www/cen2000/phc-t9.html. Accessed December 19, 2003
2. US Census Bureau. National Population Projections. I. Summary Files. Total population by age, sex, race, and Hispanic origin. (NP-T3) Projections of the total resident population by 5-year age groups, and sex with special age categories: middle series, 1999 to 2100. Revised August 2, 2002. Available at: http://www.census.gov/population/www/projections/natsum-T3.html. Accessed December 19, 2003
3. Epidemiology of anemia in the elderly;Balducci;J Am Geriatr Soc,2003
4. Anemia in the elderly;Smith;Am Fam Physician,2000
5. Prevalence and causes of anaemia in a geriatric hospitalized population;Joosten;Gerontology,1992