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Authors
Chang, C-F
Chu, P-C
Wu, P-Y
Yu, M-Y
Lee, J-Y
Tsai, M-D
Chang, M-S
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Article History
Received: 17 June 2014
Revised: 3 February 2015
Accepted: 2 March 2015
First Online: 9 April 2015
Competing interests
: The authors declare no conflict of interest.
