Liang, Kai
Liu, Fei
Fan, Jia
Sun, Dali
Liu, Chang
Lyon, Christopher J.
Bernard, David W.
Li, Yan
Yokoi, Kenji
Katz, Matthew H.
Koay, Eugene J.
Zhao, Zhen
Hu, Ye
Article History
Received: 11 May 2016
Accepted: 14 December 2016
First Online: 6 February 2017
Competing interests
: The authors declare no competing interests.