Received: 27 June 2020
Accepted: 11 September 2020
First Online: 22 September 2020
Ethics approval and consent to participate
: The study was approved by the the Ethics Committee of the First Affiliated Hospital of Soochow University(2019047) and informed consents were obtained from all subjects before enrollment.
: All subjects participating in the image acquisition and information collection signed the consent form.
: The authors declare that they have no competing interests.