Li, Chengjie http://orcid.org/0000-0001-5386-1320
Li, Jianye http://orcid.org/0000-0002-5919-815X
Zhang, Yingchao http://orcid.org/0000-0002-9047-8395
Cui, Xin http://orcid.org/0000-0002-6730-627X
Lei, Haibo http://orcid.org/0000-0002-3571-1086
Li, Guofu http://orcid.org/0000-0002-6763-5743
Funding for this research was provided by:
Key Research and Development Program of Shandong Province (2018JMRH0302)
Article History
Received: 8 October 2018
Accepted: 3 December 2018
First Online: 6 December 2018
Compliance with ethical standards
:
: There is no conflict of interest.