00358pab a2200121 454500008004000000100002800040245007900068260000900147300001400156362000900170650002000179773003700199180718b2008   xxu||||| |||| 00| 0 eng d  aCebul, Randall D. et al  aOrganizational fragmentation and care quality in the US health care system  c2008  ap.93-113.  aFall  aHealth services  aJournal of Economic Perspectives