Received: 12 December 2020
Accepted: 16 February 2021
First Online: 27 February 2021
Ethics approval and consent to participate
: Ethical approval was waived by the local Ethics Committee of Shanghai East Hospital in view of the retrospective nature of the study and all the procedures being performed were part of the imaging examination. All methods were carried out in accordance with relevant guidelines and regulations. Informed consent was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.