Competitive market spawning PPOs.
D003120:Colorado; D003256:Community Participation; D004465:Economic Competition; D006264:Health Benefit Plans, Employee / Q000639:trends*; D006746:Hospital Bed Capacity, 500 and over; D007348:Insurance, Health / Q000639:trends*; D007350:Insurance, Hospitalization / Q000639:trends*; D008505:Medical Staff, Hospital / Q000458:organization & administration*