Funding for this research was provided by:
National Natural Science Foundation of China (81570218)
Received: 5 November 2019
Accepted: 24 August 2020
First Online: 9 September 2020
Ethics approval and consent to participate
: This study was approved by the local ethics committees of the Children’s Hospital of Chongqing Medical University (Approval number: no. 24 of 2015). The patients provided signed written informed consent. The privacy rights of human subjects were observed for patients and their family.
: Not applicable.
: The authors declare that they have no competing interests.