Han, Xiaokun
Guo, Qingjun
Liu, Congqiang
Fu, Pingqing
Strauss, Harald
Yang, Junxing
Hu, Jian
Wei, Lianfang
Ren, Hong
Peters, Marc
Wei, Rongfei
Tian, Liyan
Article History
Received: 23 February 2016
Accepted: 28 June 2016
First Online: 20 July 2016
Competing interests
: The authors declare no competing financial interests.