[1] Univ Michigan, Ctr Healthcare Outcomes & Policy, Inst Healthcare Policy & Innovat, Natl Clinician Scholars Program, Ann Arbor, MI 48109 USA
[2] Univ Michigan, Ctr Healthcare Outcomes & Policy, Ann Arbor, MI 48109 USA
[3] Harvard Med Sch, Brigham & Womens Hosp, Dept Surg, Boston, MA 02115 USA
[4] Univ Michigan, Dept Surg, Ann Arbor, MI 48109 USA
[5] Univ Michigan, Ctr Value Based Insurance Design, Ann Arbor, MI 48109 USA
[6] Univ Michigan, Dept Med, Ann Arbor, MI 48109 USA
[7] Univ Michigan, Sch Publ Hlth, Dept Hlth Management & Policy, Ann Arbor, MI 48109 USA