Funding for this research was provided by:
National Natural Science Foundation of China (81670251)
Text and Data Mining valid from 2020-03-17
Received: 31 January 2020
Accepted: 2 March 2020
First Online: 17 March 2020
Ethics approval and consent to participate
: The study was approved by the medical ethics committee of the Children’s Hospital, Zhejiang University School of Medicine and was based on the institution’s guidelines for human studies. All patients gave signed informed consent.
: All authors consented to publication of the manuscript.
: The authors declare that they have no competing interests.