Qingfu Liu
Institute for Financial Studies
Fudan University
Shanghai, China
Yunbi An1
Odette School of Business
University of Windsor
Windsor, Ontario, Canada N9B 3P4
October 22, 2009

∗ This research was supported by the National Nature Science Funds of China (70873055).
1 Corresponding author: Odette School of Business, University of Windsor, Windsor, Ontario, Canada N9B 3P4
E-mail: yunbi@uwindsor.ca.