Funding for this research was provided by:
the Hebei Province Science and Technology Support Program (20277706D)
Received: 2 September 2020
Accepted: 3 June 2021
First Online: 10 June 2021
: The study was approved by the Institutional Ethics Board of the No. 7 Hospital of Wuhan and the Second Hospital of Hebei Medical University (Code: 2020-R016). Due to the nature of this retrospective study that used anonymized data, the requirement of obtaining informed consents from the patients was waived by the Institutional Ethics Board.
: Not applicable.
: The authors declare that they have no competing interests.