Funding for this research was provided by:
The University of Hong Kong (postgraduate studentship)
National Natural Science Foundation of China (CN) (11471165)
Jiangsu Natural Science Foundation of Jiangsu Province (CN) (BK20141442)
Research Grants Council of the Hong Kong Special Administrative Region (HKU17329216)
Research Grants Council of the Hong Kong Special Administrative Region (Project No. HKU7057/13P)
Society of Actuaries (US) (CAE 2013 research grant)