Liu, Ming-Gang
Li, Hu-Song
Li, Wei-Guang
Wu, Yan-Jiao
Deng, Shi-Ning
Huang, Chen
Maximyuk, Oleksandr
Sukach, Volodymyr
Krishtal, Oleg
Zhu, Michael X.
Xu, Tian-Le
Article History
Received: 10 November 2015
Accepted: 2 March 2016
First Online: 21 March 2016
Competing interests
: The authors declare no competing financial interests.