Received: 31 May 2020
Accepted: 14 September 2020
First Online: 22 September 2020
Ethics approval and consent to participate
: This study has been approved by the ethics committee in the Second Affiliated Hospital of Zhejiang University School of Medicine (Hangzhou, China) and performed in accordance with the ethical standards.
: All authors have read the complete manuscript and have approved submission of the paper.
: The authors declared no conflict of interest.