[1] Nanyang Technol Univ, Nanyang Business Sch, Div Banking & Finance, Singapore 639669, Singapore
[2] Grad Inst, CH-1202 Geneva, Switzerland
[3] Univ Hong Kong, Fac Business & Econ, Pokfulam, Hong Kong, Peoples R China
[4] New Hope Financial Serv, Beijing 100102, Peoples R China