Cost containment in health care by use of preferred provider organizations.
D005245:Fee Schedules; D006264:Health Benefit Plans, Employee / Q000191:economics*; D006761:Hospitals; D007348:Insurance, Health / Q000191:economics* / Q000458:organization & administration*; D009515:New Jersey; D010820:Physicians; D011243:Preferred Provider Organizations / Q000458:organization & administration*