Liu, Xiuping http://orcid.org/0000-0002-7706-1843
Li, Xue http://orcid.org/0000-0003-4651-8131
Li, Jing http://orcid.org/0000-0002-2512-9834
Li, Guixia http://orcid.org/0000-0001-9869-3615
Guo, Sheng http://orcid.org/0000-0002-5084-2711
Zhu, Houyu http://orcid.org/0000-0002-1102-2163
Zhao, Lianming http://orcid.org/0000-0002-9304-260X
Hao, Chunlian http://orcid.org/0000-0002-4935-3750
Guo, Wenyue http://orcid.org/0000-0002-7537-984X
Funding for this research was provided by:
National Natural Science Foundation of China (21776315)
Natural Science Foundation of Shandong Province (ZR2017MB053, ZR2016BL12)
Fundamental Research Funds for the Central Universities (17CX02031A, 15CX05068A, 15CX08010A)
Qingdao independent innovation program (16-5-1-88-jch)
Article History
Received: 5 January 2018
Accepted: 16 February 2018
First Online: 19 March 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.