Funding for this research was provided by:
National Natural Science Foundation of China (81471482, 81373221)
Received: 12 March 2020
Accepted: 18 May 2020
First Online: 29 May 2020
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of the Children’s Hospital of Fudan University. The patients and their parents provided written informed consent for enrollment in this study.
: Not applicable.
: All the authors declare that they have no competing interests.