2D. M. Cutler,J. Gruber. Does Public Insurance Crowd Out Private Insurance? Quarterly Journal of Econom- ics, 1996, ( 111 ) :391 -430.
3F. W. Ahking, C. Giaccotto, R. E. Santerre. The Aggregate Demand for Private Health Insurance Coverage in the United States. The Journal of Risk and Insurance,2009, ( 1 ) :133 - 157.
4J. A. Nyman. The Theory of Demand for Health Insurance. Stanford,CA: Stanford University Press,2003. J. G. Eisenhauer. The Theory of Demand for Health Insurance : A Review Essay. The Journal of Insurance Is- sues,2006,29 ( 1 ) :71 -87.
5J. G. Eisenhauer. The Theory of Demand for Health Insurance : A Review Essay. The Journal of Insurance Is- sues,2006,29 ( 1 ) :71 -87.
6Liu, G. G. , Wu, X. D. , Peng, C. Y. , Fu, A. Z. Urbanization and Health Care in Rural China. Contemporary Economic Policy,2002, ( 1 ) : 11 - 24.