Affiliation: | a Department of Emergency Medicine, Hospital of the University of Pennsylvania, Philadelphia, PA b Division of General Internal Medicine and Public Health, Vanderbilt University Medical Center, Nashville, TN c Department of Biomedical Informatics, Vanderbilt University Medical Center, Nashville, TN d Center for Health Services Research, Tennessee Valley Health System, Veterans Administration, Nashville, TN e Division of General Medicine and Primary Care, Department of Medicine, Brigham and Women's Hospital, Boston, MA f Information Systems, Partners HealthCare System, Wellesley, MA g Harvard Medical School, Boston, MA |