Funding for this research was provided by:
National Natural Science Foundation of China (81172243, 81572966)
Natural Science Foundation of Guangdong Province (2017A030313883)
Received: 25 August 2020
Accepted: 4 January 2021
First Online: 12 January 2021
Ethics approval and consent to participate
: The research presented here has been performed in accordance with the Declaration of Helsinki and has been approved by the ethics committee of Nanfang hospital, Southern Medical University, China.
: All of the authors of this article have participated in the planning and drafting and all of the authors listed have read and approved the final version including details and images. Written informed consent for the publication has been obtained from all of the authors.
: The authors declare that they have no competing interests.