[1
]
Payer?+?Provider Syndicate, Boston, Massachusetts.
[2
]
Harvard Medical School, Boston, Massachusetts3Brigham and Women's Hospital, Boston,
Massachusetts4Partners Information Systems, Wellesley, Massachusetts.
[3
]
Harvard Medical School, Boston, Massachusetts3Brigham and Women's Hospital, Boston,
Massachusetts4Partners Information Systems, Wellesley, Massachusetts5Harvard School
of Public Health, Boston, Massachusetts.