Funding for this research was provided by:
Hong Kong Research Grants Council (CityU 11214814)
City University of Hong Kong (9610308)
Received: 26 September 2017
Accepted: 22 May 2018
First Online: 29 May 2018
Ethics approval and consent to participate
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: All authors consented for publication of the manuscript in BMC Cancer.
: The authors declare that they have no competing interests.
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