Funding for this research was provided by:
the Bethune-Merck Diabetes Research Foundation (G-X-2019-056)
the Clinical Research Project of the First Affiliated Hospital of Xi 'an Jiaotong University (XJTU1AF-CRF-2019-007)
the Social Development Science and Technology Project of Shaanxi Province (2016sf-314)
Received: 19 May 2021
Accepted: 4 June 2021
First Online: 27 June 2021
: This study was conducted under the standard approved by the First Affiliated Hospital of Xi’an Jiaotong University, and conformed to the ethical principles for medical research involving humans of the World Medical Association Declaration of Helsinki. All participants signed informed consent forms before participating in this study.
: Not Applicable.
: The authors declare that they have no competing interest.