Funding for this research was provided by:
Suzhou Science and Technology Development Project (SYS 201757)
Natural science fund for colleges and universities of Jiangsu Province (18KJB320022)
Received: 1 June 2019
Accepted: 31 July 2019
First Online: 22 August 2019
Ethics approval and consent to participate
: Ethical approval for this study was obtained from the local ethics committee. Informed consent informed consent was obtained from the patient’s parents.
: The guardians have written informed consent to publish this information and the proof of consent can be requested at any time.
: The authors declare that they have no conflict of interest.