1Ginzberg E.The uncertain future of managed care[].The New England Journal of Medicine.1999
2Carrasouillo O,Himmelstein DU,Woolhandler S,et al.A reppraisal of private employers’role in providing health insurance[].The New England Journal of Medicine.1999
3Iglehart JK.The American health care system: expenditures[].The New England Journal of Medicine.1999
4Angell M.The American health care system revisited: a new series[].The New England Journal of Medicine.1999
5Kuttner R.The American health care system: health insurance coverage[].The New England Journal of Medicine.1999
6Andreano,R & Thomas,H.The Role of Private Sector in Health Care in the Developing Countries[]..1987
7Stiglitz,Joseph,Redefining the Role of the State.World Bank file from website[]..1998