6Wagstaff A, Van Doorslaer E. Catastrophe and impoverishment in paying for health care: With applications to Vietnam 1993-1998 [J]. Health Econ, 2003,12(11) :921-934.
7Kawabata K, Xu K, Carrin G. Preventing impoverishment through protection against catastrophic health expenditure [J]. Bull World Health Organ, 2002,80(8):612.
8Su TT, Kouyate B, Flessa S. Catastrophic household expenditure for health care in a low-income society: A study from Nouna District, Burkina Faso[J]. Bull World Health Organ, 2006,84 (1):21-27.
9Van Doorslaer E, O' Donnell O, Rannan-Eliya RP, et al. Paying out of pocket for health care in Asia: Catastrophic and poverty impact[J]. Equitap Project : Working Paper,2005(2) : 5.
10Pradhan M, Prescott N. Social risk management options for medical care in Indonesia[J]. Health Econ, 2002,11 (5): 431-446.