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Authors
Sha, Feng
Chang, Qingsong
Law, Yik Wa
Hong, Qi
Yip, Paul S. F.
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Funding
Funding for this research was provided by:
Central Policy Unit (HKU-12)
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More Information
Article History
Received: 20 November 2017
Accepted: 6 February 2018
First Online: 13 February 2018
Ethics approval and consent to participate
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: The authors declare that they have no competing interests.
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