Article History
Received: 4 May 2021
Accepted: 18 December 2021
First Online: 23 December 2021
Declarations
:
: The study was conducted in accordance with the Declaration of Helsinki (as revised in 2013). The study was approved by the ethics board of Hainan General Hospital (2021-005) and informed consent was obtained through written informed consent with a parent or guardian of the participant.
: All authors provided consent for publication. Written informed consent was obtained from the parent or legal guardian of all children participating in the study for publication of their individual details and any accompanying images in this manuscript.
: The authors declare that they have no competing interests.