title: Contract standoff continues between competing UPMC and Highmark systems.
authors.forename: Catherine
authors.initials: C
authors.lastname: Hollander
authors.forename: Melanie
authors.initials: M
authors.lastname: Evans
mesh_terms: D054598:Blue Cross Blue Shield Insurance Plans; D032982:Contracts; D004465:Economic Competition; D009096:Multi-Institutional Systems; D019982:Organizational Case Studies; D010414:Pennsylvania