Yang, Xianfa http://orcid.org/0000-0002-6843-8055
Hu, Boqiang
Hou, Yu http://orcid.org/0000-0001-7875-7087
Qiao, Yunbo
Wang, Ran
Chen, Yingying
Qian, Yun
Feng, Su
Chen, Jun
Liu, Chang
Peng, Guangdun http://orcid.org/0000-0002-8586-0637
Tang, Fuchou http://orcid.org/0000-0002-8625-7717
Jing, Naihe
Article History
Received: 8 October 2017
Revised: 17 December 2017
Accepted: 20 December 2017
First Online: 20 February 2018
Competing interests
: The authors declare that they have no conflict of interest.