[1] Chinese Univ Hong Kong, Dept Econ, Shatin, Hong Kong, Peoples R China
[2] Tsinghua Univ, Sch Econ & Management, Beijing 100084, Peoples R China
[3] Univ Maryland, Dept Econ, College Pk, MD 20742 USA
[4] Chinese Univ Hong Kong, Sch Accountancy, Shatin, Hong Kong, Peoples R China
[5] Zhejiang Univ, Peking Univ, Guanghua Sch Management, Ctr Res Private Enterprise, Hangzhou, Zhejiang, Peoples R China