Yan, Xiaochang
Yao, Baoqun
Chen, Xi
Bo, Shaoye
Qin, Xuezheng
Yan, Hua
Funding for this research was provided by:
National Natural Science Foundation of China (81830026)
Natural Science Foundation of Tianjin (18ZXDBSY00030)
Article History
Received: 31 January 2021
Accepted: 14 July 2021
First Online: 31 July 2021
Declarations
:
: This study adhered to the tenets of the Declaration of Helsinki and was approved by the Ethics Committee of Tianjin Medical University of Medical Science. Study information sheets that described the study purpose and procedures were provided to all respondents before enrollment, and all participants provided written informed consent to participate. The confidentiality and privacy of all personal information were secured.
: Not Applicable.
: The authors declare that they have no competing interests.