Costs, choice, and competition: some considerations of alternative delivery systems.
D003258:Consumer Behavior; D006123:Group Practice / Q000458:organization & administration*; D006125:Group Practice, Prepaid / Q000191:economics / Q000458:organization & administration*; D006279:Health Maintenance Organizations / Q000191:economics / Q000458:organization & administration*; D006699:Home Care Services / Q000191:economics / Q000458:organization & administration*; D006801:Humans; D007348:Insurance, Health / Q000191:economics / Q000458:organization & administration*; D014481:United States