How illness demographics will affect the lab.
D000368:Aged; D003710:Demography; D005544:Forecasting; D006299:Health Services for the Aged / Q000639:trends*; D006801:Humans; D007753:Laboratories / Q000639:trends*; D008017:Life Expectancy; D009017:Morbidity; D013223:Statistics as Topic; D014481:United States