[1] Univ So Calif, Int Programs, Leonard D Schaeffer Ctr Hlth Policy & Econ, Los Angeles, CA 90089 USA
[2] Univ So Calif, Titus Family Dept Clin Pharm Pharmaceut Econ & Po, Los Angeles, CA USA
[3] RAND, Santa Monica, CA USA
[4] Univ Calif Los Angeles, David Geffen Sch Med, Los Angeles, CA 90095 USA
[5] Harvard Univ, Sch Med, Dept Hlth Care Policy, Boston, MA 02115 USA
[6] Harvard Univ, Div Hlth Policy Res & Educ, Cambridge, MA 02138 USA
[7] Harvard Univ, Comm Higher Degrees Hlth Policy, Cambridge, MA 02138 USA