Yuan, Xiang
Zhang, Cheng http://orcid.org/0000-0002-9882-1952
Liu, Yanwen
Narayan, Awadhesh
Song, Chaoyu
Shen, Shoudong
Sui, Xing
Xu, Jie
Yu, Haochi
An, Zhenghua
Zhao, Jun http://orcid.org/0000-0002-0421-8934
Sanvito, Stefano
Yan, Hugen
Xiu, Faxian
Article History
Received: 11 February 2016
Revised: 17 August 2016
Accepted: 26 August 2016
First Online: 11 November 2016
Competing interests
: The authors declare no competing financial interests.