Liu, Qun
Liu, Shou-Sheng
Zhao, Zhen-Zhen
Zhao, Ben-Tian
Du, Shui-Xian
Jin, Wen-Wen
Xin, Yong-Ning http://orcid.org/0000-0002-3692-7655
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: 3 July 2019
Accepted: 15 August 2019
First Online: 31 August 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.