Funding for this research was provided by:
Chongqing Yuzhong District Science and Technology Bureau (20190116)
Received: 11 March 2020
Accepted: 19 May 2020
First Online: 27 May 2020
Ethics approval and consent to participate
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.” Written informed consent was obtained from all individual participants included in the study. This study was approved by the Ethics Committee of Chongqing Medical University.
: Not applicable.
: The authors declare there are no competing interests.