1. Birmingham, AL Veterans Affairs Health Care System, Birmingham, AL, USA
2. National Center on Homelessness among Veterans, U.S. Department of Veterans Affairs, Washington, DC, USA
3. School of Public Health, University of Alabama at Birmingham, Birmingham, AL, USA
4. IDEAS Center, Veterans Affairs Salt Lake City Health Care System, Salt Lake City, UT, USA
5. Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT, USA
6. School of Social Work, Boston University, Boston, MA, USA
7. Center for Healthcare Organization and Implementation Research, Bedford VA Medical Center, Bedford, MA, USA
8. Department of Family Medicine, University of California at Los Angeles, Los Angeles, CA, USA
9. VA Greater Los Angeles Healthcare System, Los Angeles, CA, USA
10. Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
11. School of Public Health, University of Texas Health Sciences Center, San Antonio, TX, USA