HMO participation in Medicare Choice

Cawley JH, Chernew ME and McLaughlin CG
Michael E. Chernew
Journal of Economics and Management Strategy
http://onlinelibrary.wiley.com/doi/10.1111/j.1530-9134.2005.00073.x/abstract;jsessionid=A8D33B0DD2EAAD985ADFB774BF673E21.d02t01?deniedAccessCustomisedMessage=&userIsAuthenticated=false