title: PSOs: what happened?
authors: M D
authors: MD
authors: Dalzell
mesh_terms: D002204:Capitation Fee; D014487:Centers for Medicare and Medicaid Services, U.S.; D002568:Certification; D006279:Health Maintenance Organizations / Q000191:economics / Q000458:organization & administration; D006278:Medicare / Q000191:economics / Q000458:organization & administration*; D015397:Program Evaluation; D020400:Provider-Sponsored Organizations / Q000191:economics / Q000458:organization & administration*; D014481:United States