Data watch. Exclusive HMO data. Tracking usage patterns of the chronically ill.
D002908:Chronic Disease / Q000453:epidemiology*; D003625:Data Collection; D006279:Health Maintenance Organizations / Q000706:statistics & numerical data*; D006301:Health Services Needs and Demand / Q000706:statistics & numerical data*; D006801:Humans; D014481:United States / Q000453:epidemiology