The implications of HMOs for private insurers.
D003365:Costs and Cost Analysis; D003695:Delivery of Health Care; D005380:Financing, Government; D006123:Group Practice; D006279:Health Maintenance Organizations; D007348:Insurance, Health; D007350:Insurance, Hospitalization; D007357:Insurance, Physician Services; D007883:Legislation, Medical; D010067:Ownership; D014481:United States