Zhang, Y
Yatsuya, H
Li, Y
Chiang, C
Hirakawa, Y
Kawazoe, N
Tamakoshi, K
Toyoshima, H
Aoyama, A
Article History
Received: 23 October 2016
Revised: 19 December 2016
Accepted: 17 January 2017
First Online: 20 March 2017
Competing interests
: The authors declare no conflict of interest.