4Adam Wagstaff, Magnus Lindelow. Can Insurance Increase Financial Risk? The Curious Case of Health Insurance in China [J]. Health Economics, 2008, (8).
5Ke Xu et al.. Protecting Households Form Catastrophic Health Spending[J]. Health Affairs, 2007, (9).
6Ke Xu et al.. Household Catastrophic Health Expenditure: A multicounty Analysis[J]. The Lancet, 2003, (1).