Received: 4 June 2019
Accepted: 4 July 2019
First Online: 23 July 2019
Ethics approval and consent to participate
: This research was approved by the Institutional Research Ethics Committee of West China Hospital. A written informed consent to participate was taken from all participants.
: The family has given written informed consent for the publication of this manuscript for themselves and on behalf of their patient including the radiology images.
: The authors declare that they have no competing interests.