Received: 16 December 2020
Accepted: 18 February 2021
First Online: 11 March 2021
: This study was approved by the ethics committee of Shenzhen Children's Hospital. All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Written informed consent was obtained from the participants in the study. In the case of minors, who were younger than the age of 16, written informed consent to participate had been obtained from their parents.
: Written informed consent for publication of clinical details identifying images or other personal was obtained from the parents of the participant under the age of 18.
: The authors declare that they have no competing interests.