Yang, Xuecheng
Mao, Xin
Ding, Xuemei
Guan, Fengju
Jia, Yuefeng
Luo, Lei
Li, Bin
Tan, Hailin
Cao, Caixia http://orcid.org/0000-0001-8934-9214
Funding for this research was provided by:
Science and Technology Project of Shandong Province (No. 2011YD18006 and No. J16LL58)
Article History
Received: 1 November 2017
Accepted: 12 February 2018
First Online: 26 February 2018
Compliance with ethical standards
:
: The authors have no conflict of interest to declare.