Funding for this research was provided by:
Hong Kong Baptist University (SOSC/07-08/CERGIAS-6 and FRG2/11-12/033)
Chinese University of Hong Kong
Research Grants Council of Hong Kong Special Administrative Region (HKBU245612 32-12-456)
Text and Data Mining valid from 2018-03-06
Received: 15 June 2017
Accepted: 30 January 2018
First Online: 6 March 2018
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