Yang, Xue
Hou, Fang-Lin
Zhao, Cheng
Jiang, Cai-Yun
Li, Xiu-Mei
Yu, Ning
Funding for this research was provided by:
Natural Science Foundation of Shandong Province (ZR2014HM092)
Article History
First Online: 27 February 2020
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.
: This study was approved by the institutional review board of Qingdao University, Shandong Province, P.R. China. All procedures performed in the studies involving human participants were in accordance with the ethics standards of the institutional and national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethics standards.
: Written informed consent was obtained from all individual participants included in this study.