A study of medical care use under two comprehensive prepaid plans.
D000553:Ambulatory Care; D054598:Blue Cross Blue Shield Insurance Plans; D002140:California; D002755:Choice Behavior; D006123:Group Practice / Q000458:organization & administration*; D006264:Health Benefit Plans, Employee; D006296:Health Services / Q000706:statistics & numerical data*; D006761:Hospitals / Q000706:statistics & numerical data; D006801:Humans; D007348:Insurance, Health; D007350:Insurance, Hospitalization; D007354:Insurance, Major Medical; D010820:Physicians / Q000706:statistics & numerical data; D014495:Universities