title: The PSO option.
authors.forename: W A
authors.initials: WA
authors.lastname: Weronka
mesh_terms: D004465:Economic Competition; D005249:Fees and Charges; D006279:Health Maintenance Organizations / Q000191:economics / Q000458:organization & administration; D020398:Medicare Part C / Q000191:economics; D020399:Practice Management / Q000191:economics / Q000458:organization & administration / Q000592:standards; D020400:Provider-Sponsored Organizations / Q000191:economics / Q000458:organization & administration / Q000639:trends*; D014481:United States