Funding for this research was provided by:
Shandong Nature Science Fund (ZR2016HP02)
Interdisciplinary Medicine Seed Fund of Peking University (BMU2018ME002)
Received: 31 August 2019
Accepted: 24 May 2020
First Online: 1 June 2020
Ethics approval and consent to participate
: The study was approved by the ethics committee of the Hebei Yanda Lu Daopei hospital. Written informed consent to genetic analysis and participate in this study was obtained from the all of the participants or parents or legal guardians of any participant under the age of 16.
: Written informed consent for publication of clinical details was obtained from the parents or legal guardians of any participant under the age of 18.
: The authors declare that no competing interests in this study.