The continuing evolution of health maintenance organizations.
D000488:Allied Health Personnel / Q000193:education; D003258:Consumer Behavior; D003365:Costs and Cost Analysis; D004501:Education, Medical; D005251:Fees, Medical; D005381:Financing, Organized; D006123:Group Practice; D006279:Health Maintenance Organizations; D006280:Health Workforce; D007348:Insurance, Health; D009934:Organization and Administration; D011320:Primary Health Care; D014481:United States