Funding for this research was provided by:
National Natural Science Foundation of China (81870459)
Received: 20 November 2018
Accepted: 4 December 2019
First Online: 19 December 2019
Ethics approval and consent to participate
: Protocols were reviewed and approved by the Ethics Committee of the Shanghai Children’s Hospital in China (2014R022-F01). All of the samples were obtained from all participants or their parent/legal guardian with the written informed consent.
: Not applicable.
: The author declares no competing financial interests.