title: Providers, insurers fight over PSO definition.
authors.forename: E
authors.initials: E
authors.lastname: Weissenstein
mesh_terms: D019058:Community Networks / Q000145:classification / Q000331:legislation & jurisprudence / Q000458:organization & administration*; D006278:Medicare / Q000331:legislation & jurisprudence; D010067:Ownership / Q000331:legislation & jurisprudence; D014481:United States