Lai, M-W
Liang, K-H
Lin, W-R
Huang, Y-H
Huang, S-F
Chen, T-C
Yeh, C-T
Article History
Received: 28 December 2015
Revised: 17 October 2016
Accepted: 25 October 2016
First Online: 5 December 2016
Competing interests
: The authors declare no conflict of interest.