[1] Vet Affairs Ctr Clin Management Res, 2215 Fuller Rd, Ann Arbor, MI 48105 USA
[2] Univ Michigan Hlth Syst, Dept Surg, Ann Arbor, MI USA
[3] Univ Michigan, Inst Healthcare Policy & Innovat, Ann Arbor, MI USA
[4] Univ Michigan Hlth Syst, Dept Internal Med, Ann Arbor, MI USA
[5] Univ Utah, Sch Med, Dept Populat Hlth Sci, Salt Lake City, UT USA
[6] Vet Affairs Salt Lake City Ctr Informat Decis Enh, Salt Lake City, UT USA
[7] Univ Michigan, Sch Publ Hlth, Dept Hlth Behav & Hlth Educ, Ann Arbor, MI 48109 USA