Funding for this research was provided by:
National Natural Science Foundation of China (81771589)
the Program of Tianjin Science and Technology Plan (18ZXDBSY00170)
the Key Project of Tianjin Health Care Professionals (16KG166)
Received: 6 April 2020
Accepted: 26 October 2020
First Online: 4 November 2020
Ethics approval and consent to participate
: All the subjects signed the informed consent forms for genetic testing routinely, and the study was approved by the medical ethics committee of Tianjin Children’s Hospital. A written informed consent was obtained from the parents and informed assent from the children and adolescents.
: Not applicable.
: The authors declare that they have no competing interests.