Yuan, Qi
Chen, Zheng
Santulli, Gaetano
Gu, Lei
Yang, Zhi-Guang
Yuan, Zeng-Qiang
Zhao, Yan-Ting
Xin, Hong-Bo
Deng, Ke-Yu
Wang, Shi-Qiang
Ji, Guangju
Article History
Received: 28 August 2014
Accepted: 19 November 2014
First Online: 11 December 2014
Competing interests
: The authors declare no competing financial interests.