Received: 28 February 2021
Accepted: 18 June 2021
First Online: 11 August 2021
: The study was approved by the Ethical Committee of the Minhang Hospital, Fudan University.The study abides by the ethical norms and principles for research as established by the Declaration of Helsinki. Informed consent was obtained from all subjects. All patients gave permission for the collection of their cervical swabs and for their medical records to be accessed and recorded.
: The authors have declared that no conflicts of interest exist. All authors have submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest.