Received: 1 August 2020
Revised: 16 September 2020
Accepted: 27 September 2020
First Online: 20 October 2020
Compliance with ethical standards
: The authors declare that they have no conflicts of interest.
: The study was approved by the institutional review board of TongDe Hospital of Zhejiang Province.
: Written informed consent was waived by the Institutional Review Board.