[1
]Department of Health Care Policy, Harvard Medical School, Boston, Massachusetts
[2
]Division of General Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts
[3
]OptumLabs Visiting Fellow, Eden Prairie, Minnesota
[4
]RAND Corporation, Arlington, Virginia
[5
]Division of General Internal Medicine and Primary Care, Department of Medicine, Brigham
and Women’s Hospital, Boston, Massachusetts
[6
]Department of Health Policy and Management, Harvard T. H. Chan School of Public Health,
Boston, Massachusetts