Liu, Liu
Lei, Ienglam
Karatas, Hacer
Li, Yangbing
Wang, Li
Gnatovskiy, Leonid
Dou, Yali
Wang, Shaomeng
Qian, Li
Wang, Zhong
Article History
Received: 28 August 2016
Accepted: 5 September 2016
First Online: 11 October 2016
Competing interests
: The authors declare no conflict of interest.