Funding for this research was provided by:
Anhui provincial department of health clinical medical technology application project (2008B07)
Article History
Received: 3 June 2019
Accepted: 24 October 2019
First Online: 4 November 2019
Ethics approval and consent to participate
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. The study was approved by the Medical Research Ethics Committee of Anhui Provincial Children’s Hospital, informed consent was obtained from all guardians of individual participants included in the study.
: Not applicable.
: The authors declare that they have no competing interests.