[1] Geisel Sch Med Dartmouth, Dartmouth Inst Hlth Policy & Clin Practice, Lebanon, NH 03766 USA
[2] Dartmouth Hitchcock Med Ctr, Norris Cotton Canc Ctr, Lebanon, NH 03766 USA
[3] Harvard Univ, Sch Med, Dept Hlth Care Policy, Boston, MA 02115 USA
[4] Brigham & Womens Hosp, Div Gen Internal Med, Boston, MA 02115 USA
[5] Partners HealthCare, Boston, MA USA
[6] Harvard Univ, Sch Publ Hlth, Dept Hlth Policy & Management, Boston, MA 02115 USA
[7] Geisel Sch Med Dartmouth, Dept Community & Family Med, Lebanon, NH 03766 USA