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机译:Changes In Physician Consolidation With The Spread Of Accountable Care Organizations
Univ Penn, Perelman Sch Med, Div Gen Internal Med, Philadelphia, PA 19104 USA;
Johns Hopkins Univ, Bloomberg Sch Publ Hlth, Hlth Policy & Econ, Baltimore, MD USA;
Univ Penn, Wharton Sch, Hlth Care Management, Philadelphia, PA 19104 USA;