Received: 10 October 2019
Accepted: 21 February 2020
First Online: 28 February 2020
Ethics approval and consent to participate
: All patients provided signed informed consent to allow their clinical and radiologic data to be used for research programmes. For the patient (No.8, 15 year-old), a written informed consent was obtained from her father.The name of the Board: Institutional Review Board of Fuzhou Second Hospital of Xiamen University. Approval number is INR 10020190108.
: Not applicable.
: The authors declare that they have no competing interests.