[1] Univ Iowa, Vet Affairs Med Ctr, Ctr Res Implementat Innovat Strategies Practice, Iowa City, IA USA
[2] Univ Iowa, Dept Internal Med, Iowa City, IA 52242 USA
[3] Univ Iowa, Dept Surg, Iowa City, IA 52242 USA
[4] Colorado Hlth Outcomes Program, Aurora, CO USA
[5] Boston Univ, Ctr Hlth Care Financing & Econ, Boston Vet Affairs, Boston, MA 02215 USA
[6] Boston Univ, Dept Hlth Policy & Management, Boston, MA 02215 USA