Funding for this research was provided by:
Department of Science and Technology of Sichuan Province (Grant Number JH2018055)
Article History
Received: 28 August 2020
Accepted: 18 December 2020
First Online: 3 January 2021
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: Consent for publication was obtained for every individual person’s data included in the study.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: For this type of study, formal consent is not required. This study was performed under a waiver of informed consent by the institutional review board.