1. UCSF Department of Medicine, Center for Vulnerable Populations at Zuckerberg San Francisco General Hospital, San Francisco, California (C.R.L., A.G.C., U.S.)
2. Geisel School of Medicine, Dartmouth College, Lebanon, New Hampshire (E.C.N.)
3. Planetree International, Derby, Connecticut (S.F.)
4. Center for Patient Safety, Research, and Practice, Brigham and Women's Hospital, Boston, Massachusetts (P.C.D.)