HMOs second decade: 1983-1993. Proposed response to new challenges.
D004465:Economic Competition; D004467:Economics; D005544:Forecasting; D006264:Health Benefit Plans, Employee / Q000458:organization & administration; D006279:Health Maintenance Organizations / Q000639:trends*; D009936:Organizational Innovation; D011243:Preferred Provider Organizations / Q000458:organization & administration; D014481:United States