aCenter for Care Delivery and Outcomes Research, Minneapolis VA Health Care System, Minneapolis, MN, United States
bDepartment of Psychiatry, University of Minnesota Medical School, Minneapolis, MN, United States
cPsychosocial and Community Health, University of Washington, Seattle, WA, United States
dBehavioral Medicine Research Laboratory and Clinic, Johns Hopkins University, School of Medicine, Baltimore, MD, United States
ePsychiatry and Behavioral Sciences, University of Washington, Seattle, WA, United States
Corresponding author. Address: Minneapolis VA Health Care System, One Veterans Dr, Minneapolis, MN 55417, United States. E-mail address: Erin.Koffel@va.gov (E. Koffel).
Sponsorships or competing interests that may be relevant to content are disclosed at the end of this article.
Supplemental digital content is available for this article. Direct URL citations appear in the printed text and are provided in the HTML and PDF versions of this article on the journal's Web site (www.painjournalonline.com).
Received July 02, 2018
Received in revised form August 17, 2018
Accepted September 25, 2018