1. Division of Health Policy; University of Pennsylvania; Philadelphia PA
2. CMC Philadelphia VA Medical Center; Philadelphia PA
3. Leonard Davis Institute of Health Economics; The Wharton School; University of Pennsylvania; Philadelphia PA
4. Division of General Internal Medicine and Primary Care; Brigham & Women's Hospital; Harvard Medical School; Boston MA
5. Clinical Informatics; Partners eCare; Partners Healthcare Inc.; Boston MA
6. School of Computer Science; College of Computing, Georgia Institute of Technology; Atlanta GA