Funding for this research was provided by:
Chinese Preventive Medicine Association (2019-Z-01)
Received: 8 January 2021
Accepted: 13 April 2021
First Online: 20 April 2021
: This study was approved by the ethics committee of Peking University People’s Hospital (approval number 2015PHB165). We obtained written informed consent from all participants in this study.
: Not Applicable.
: All of the authors had no any personal, financial, commercial, or academic conflicts of interest separately.