Pu, Qian
Lu, Li
Dong, Ke
Geng, Wen-wen
Lv, Yan-rong
Gao, Hai-dong
Funding for this research was provided by:
National Natural Science Foundation of China (81572587, 81602310)
Article History
Received: 14 August 2019
Accepted: 22 January 2020
First Online: 6 February 2020
Compliance with Ethical Standards
:
: The authors declare that there are no conflicts of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the Research Ethics Committee of Qilu Hospital (Qingdao) of Shandong University and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.