Received: 7 October 2020
Accepted: 8 January 2021
First Online: 5 February 2021
Ethics approval and consent to participate
: All methods and procedures in this study were performed in accordance with the relevant guidelines and regulations of ethics committee of Sichuan University and the informed consent for participation in the study was obtained.
: Informed consent was obtained from all individual participants for publication of their clinical details and clinical images.
: The authors declare that they have no competing interests.