Funding for this research was provided by:
Science and Technology Research Program of Chongqing Municipal Education Commission (KJ1500235, KJ1702022)
Medical Research Program of Chongqing Health and Family Planning Commission (2018MSXM009)
Natural Science Foundation of Chongqing (cstc2020jcyj-msxmX0519)
Received: 20 September 2020
Accepted: 4 February 2021
First Online: 22 February 2021
Ethics approval and consent to participate
: The data and samples analyzed in the present study were obtained in accordance with the standards and approved by the Chongqing Medical University Institutional Review Board and Biomedical Ethics Committee. For this study, samples were collected at the microbiology laboratory of our hospital, with no contact with the patients. This study was retrospective and there was no patient identification performed during data collection. Therefore, the ethics committee determined that informed consent was not required.
: Not applicable.
: The authors declare that they have no competing interests.