Funding for this research was provided by:
The Scientific Technology Projects of Health and Family Planning Commission of Zhejiang Province (2015KYB149, 2016KYA171)
Text and Data Mining valid from 2019-01-08
Received: 10 April 2018
Accepted: 28 December 2018
First Online: 8 January 2019
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of First People's Hospital Affiliated to Huzhou University (Approval No. 20140623) and Huzhou Central Hospital (Approval No. 20140626), and signed informed consent was obtained from the patients, parents or legal guardians of children under 18 years old.
: Not applicable.
: The authors declare that they have no competing interests.
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