1. Division of General Internal Medicine, University of California, San Francisco (UCSF)2UCSF Center for Vulnerable Populations at San Francisco General Hospital, San Francisco
2. Department of Medicine, Oregon Health & Science University, Portland4VA Portland Health Care System, Portland, Oregon
3. John Burns School of Medicine, University of Hawaii, Honolulu
4. Division of Rheumatology, UCSF7Institute for Health Policy Studies, UCSF