Liu, Qun
Xue, Feng
Meng, Jing
Liu, Shou-Sheng
Chen, Li-Zhen
Gao, Hui
Geng, Ning
Jin, Wen-Wen
Xin, Yong-Ning http://orcid.org/0000-0002-3692-7655
Xuan, Shi-Ying
Funding for this research was provided by:
National Natural Science Foundation of China (31770837)
Qingdao People’s Livelihood Science and technology plan (18-6-1-68-nsh)
Article History
Received: 23 December 2018
Accepted: 26 February 2019
First Online: 9 March 2019
Ethics approval and consent to participate
: The study protocol was approved by the Ethics Committee of Qingdao Municipal Hospital before participation (Approval NO.2017–20). All the subjects have signed written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.
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