Received: 27 July 2020
Accepted: 1 October 2020
First Online: 8 October 2020
Ethics approval and consent to participate
: Not applicable (radiographic follow-up). The study was a retrospective study, we did not collect the patient’s privacy Information and had none follow-up for patients. We had an exemption from requiring ethics approval from the local ethics committee. (No. 2020–458, Peking university first hospital ethics committee).
: The patient’s written consent to publish the study and anonymized imaging was obtained prior to submission.
: All authors declare they have no conflict of interest.