[1] Zhejiang Univ, Dept Publ Finance, Hangzhou 310027, Peoples R China
[2] Tsinghua Univ, Sch Econ & Management, Beijing 100084, Peoples R China
[3] Univ Int Business & Econ, Sch Int Trade & Econ, Beijing 100084, Peoples R China
[4] Hong Kong Univ Sci & Technol, Div Social Sci, Clear Water Bay, Hong Kong, Peoples R China