[1] Univ Pittsburgh, CHAllenges Managing & Preventing Pain CHAMPP Clin, Pittsburgh, PA 15213 USA
[2] Univ Pittsburgh, Ctr Res Hlth Care, Div Gen Internal Med, Pittsburgh, PA 15213 USA
[3] Albert Einstein Coll Med, Montefiore Med Ctr, Div Gen Internal Med, Bronx, NY USA
[4] Oregon Hlth & Sci Univ, Dept Psychiat, Portland, OR USA
[5] VA Portland Hlth Care Syst, Ctr Improve Vet Involvement Care, Portland, OR USA
[6] Oregon Hlth & Sci Univ, Dept Med, Portland, OR USA
[7] Univ Pittsburgh, 230 McKee Pl Suite 600, Pittsburgh, PA 15213 USA