Li, Peng
Wen, Yan
He, Xin
Zhang, Qiang
Xia, Chuan http://orcid.org/0000-0003-4526-159X
Yu, Zhi-Ming http://orcid.org/0000-0002-7186-2543
Yang, Shengyuan A. http://orcid.org/0000-0001-6003-1501
Zhu, Zhiyong
Alshareef, Husam N. http://orcid.org/0000-0001-5029-2142
Zhang, Xi-Xiang http://orcid.org/0000-0002-3478-6414
Article History
Received: 7 June 2017
Accepted: 14 November 2017
First Online: 15 December 2017
Competing interests
: The authors declare no competing financial interests.