title: PPOs will proliferate if QA and UR programs improve.
mesh_terms: D003256:Community Participation / Q000639:trends; D004465:Economic Competition / Q000639:trends; D006264:Health Benefit Plans, Employee / Q000639:trends*; D007348:Insurance, Health / Q000639:trends*; D007350:Insurance, Hospitalization / Q000639:trends; D014481:United States