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Authors
Hsu, K-H
Wu, T-W
Wang, Y-C
Lim, W-H
Lee, C-C
Lien, R
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Article History
Received: 8 August 2015
Revised: 27 November 2015
Accepted: 4 January 2016
First Online: 18 February 2016
Competing interests
: The authors declare no conflict of interest.
