1. VA Palo Alto Health Care System, Menlo Park, CA, USA
2. University of California San Francisco School of Medicine, San Francisco, CA, USA
3. VA Center for the Study of Healthcare Innovation, Implementation and Policy, Los Angeles, CA, USA
4. VA Greater Los Angeles Healthcare System, Los Angeles, CA, USA
5. David Geffen School of Medicine, University of California at Los Angeles, USA
6. VA Salt Lake City Health Care System, Salt Lake City, UT, USA
7. University of Utah School of Medicine, Salt Lake City, UT, USA
8. Stanford University School of Medicine, Stanford, CA, USA