Han, W
Hu, Y
Tang, Y
Xue, F
Hou, L
Liang, S
Zhang, B
Wang, W
Asaiti, K
Pang, H
Wang, Z
Wang, Y
Zhang, M
Jiang, J
Article History
Received: 5 July 2016
Revised: 2 October 2016
Accepted: 21 October 2016
First Online: 5 January 2017
Competing interests
: The authors declare no conflict of interest.