Funding for this research was provided by:
National Natural Science Foundation of China (81470882)
Article History
Received: 18 December 2018
Accepted: 6 February 2019
First Online: 14 February 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: The present study was approved by the Research Ethics Committee of Qilu Hospital of Shandong University (KYLL-2014(KS)-050).
: All applicable international, national, and/or institutional guidelines for the care and use of animals were followed.