He, Wen-Jun
Lai, Ying-Si
Karmacharya, Biraj M.
Dai, Bo-Feng
Hao, Yuan-Tao
Xu, Dong Roman
Article History
Received: 28 August 2017
Accepted: 20 March 2018
First Online: 2 April 2018
Ethics approval and consent to participate
: This is a secondary data analysis, so no ethics approval was needed nor sought.
: Same as above. This is a secondary data analysis, so there was no need for consent for publication.
: The authors declare that they have no competing interests.
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