title: Commentary on "Is the system really the solution? Operating costs in hospital systems": limits to system efficiency in centralized hospital systems: illustration from the University of Pennsylvania Health System.
authors.affiliation: University of Pennsylvania Health System, Philadelphia, PA, USA rmuller@uphs.upenn.edu.
authors.forename: Ralph W
authors.initials: RW
authors.lastname: Muller
authors.affiliation: University of Pennsylvania Health System, Philadelphia, PA, USA.
authors.forename: Gregory B
authors.initials: GB
authors.lastname: Kruse
mesh_terms: D004526:Efficiency; D017598:Efficiency, Organizational / Q000191:economics*; D017721:Hospital Costs; D006761:Hospitals