1. Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts (G.D.S., M.J.)
2. University of Massachusetts Medical School, Worcester, Massachusetts (S.A.M.)
3. McGill University, Montreal, Quebec, Canada (D.H.E.)
4. Brigham and Women's Hospital, Boston, Massachusetts, and Partners HealthCare, Somerville, Massachusetts (L.A.V., S.M.)
5. Brigham and Women's Hospital and Tufts University School of Medicine, Boston, Massachusetts, and Partners HealthCare, Somerville, Massachusetts (E.R.)
6. Kaiser Permanente School of Medicine, Pasadena, California (C.C.)
7. University of Illinois, Chicago, Chicago, Illinois (W.G.)
8. Harvard Medical School, Boston, Massachusetts; Victoria University of Wellington, Wellington, New Zealand (A.J.)
9. Indiana University, Indianapolis, Indiana (K.K.)
10. Northwestern University, Chicago, Illinois (B.L.L.)
11. York University, Toronto, Ontario, Canada (J.L.)
12. ArtsPractica, Guilford, Connecticut (A.M.)
13. Brigham Circle Medical Associates, Boston, Massachusetts (S.M.)
14. Yale University School of Medicine, New Haven, Connecticut (L.S.)
15. The University of Edinburgh, Edinburgh, United Kingdom (A.S.)