[1] Harvard TH Chan Sch Publ Hlth, Dept Hlth Policy & Management, 677 Huntington Ave, Boston, MA 02115 USA
[2] Harvard Med Sch, Dept Med, Boston, MA USA
[3] Massachusetts Gen Hosp, Mongan Inst Hlth Policy, Boston, MA 02114 USA
[4] VA Boston Healthcare Syst, Ctr Healthcare Org & Implementat Res, Boston, MA USA
[5] VISN 17 Ctr Excellence Res Returning War Vet, Waco, TX USA
[6] Boston Univ, Sch Publ Hlth, Dept Hlth Policy & Management, Boston, MA 02215 USA