Song, Ning-Ning
Jia, Yun-Fang
Zhang, Lei
Zhang, Qiong
Huang, Ying
Liu, Xiao-Zhen
Hu, Ling
Lan, Wei
Chen, Ling
Lesch, Klaus-Peter
Chen, Xiaoyan
Xu, Lin
Ding, Yu-Qiang
Article History
Received: 1 October 2015
Accepted: 30 December 2015
First Online: 3 February 2016
Competing interests
: The authors declare no competing financial interests.