Funding for this research was provided by:
the Chengdu Medical College program (CYZYB20-10)
Received: 7 April 2020
Accepted: 11 January 2021
First Online: 15 March 2021
Ethics approval and consent to participate
: This was a retrospective study in which did not contain experiments using animals and human studies. The anonymised patient data and strains were collected and used during routine clinical practice, with patient consent. The research was approved by the Ethics Committee of the First Affiliated Hospital of Chengdu Medical College, and it was performed in accordance with the approved guidelines. Written informed consent were obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.