1. Harvard Medical School and Beth Israel Deaconess Medical Center, Boston, Massachusetts (C.M.D., S.K.B., L.F., T.D., J.W.)
2. Beth Israel Deaconess Medical Center, Boston, Massachusetts (Z.D.)
3. David Geffen School of Medicine at UCLA, Los Angeles, California (J.E.)
4. Beth Israel Deaconess Medical School, Boston, Massachusetts (P.F.)
5. University of Washington School of Medicine, Seattle, Washington (J.M.L., T.H.P.)