机构:
Harvard Med Sch, Hlth Care Policy, 180 Longwood, Boston, MA 02115 USA
Harvard TH Chan Sch Publ Hlth, Hlth Policy & Management, Boston, MA USA
Harvard Kennedy Sch, Cambridge, MA USA
NBER, Cambridge, MA 02138 USAHarvard Med Sch, Hlth Care Policy, 180 Longwood, Boston, MA 02115 USA