Funding for this research was provided by:
Department of Science and Technology of Jilin Province (20190303170SF)
Health Commission of Jilin Province (2019J001)
Article History
Accepted: 30 September 2020
First Online: 20 October 2020
Declarations
:
: This work was funded by Science and Technology Department of Jilin Province (20190303170SF); Health Commission of Jilin Province (2019J001).
: SL, QZ, WL, XZ and KL have no conflicts of interest to declare.
: Data sharing not applicable to this article as no datasets were generated or analysed during the current study.
: The study conception and design were developed by SL, QZ and KL. Data collection and interpretation were performed by SL, QZ, WL and XZ. SL and QZ wrote the manuscript, which was critically reviewed by KL. All authors approved the version to be published.
: Not applicable.