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Authors
Tsai, L-H
Wu, J-Y
Cheng, Y-W
Chen, C-Y
Sheu, G-T
Wu, T-C
Lee, H
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Article History
Received: 23 December 2013
Revised: 2 March 2014
Accepted: 26 March 2014
First Online: 5 May 2014
Competing interests
: The authors declare no conflict of interest.
