Funding for this research was provided by:
Shanghai Municipal Health Commission (GWIII-26, 20174Y0133, 201640032)
the National Human Genetic Resources Sharing Service Platform (2005DKA21300)
National Natural Science Foundation of China (41991314, 81530086, 81803246)
Received: 14 November 2019
Accepted: 21 May 2020
First Online: 3 June 2020
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine. All parents provided a written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.