Funding for this research was provided by:
National Natural Science Foundation of China (81970757)
Received: 14 August 2020
Accepted: 20 October 2020
First Online: 31 October 2020
Ethics approval and consent to participate
: This study was approved by the Local Ethics Committee of the Department of Scientific Research at Peking Union Medical College Hospital (PUMCH). Written informed consent was obtained from all of participants before entering the study.
: Written consent for publication was obtained from the patient and his parents.
: The authors declare that they have no competing interests.