Funding for this research was provided by:
Natural Science Foundation of Zhejiang Province (LY16H040011)
Zhejiang Medical and Health Research Project (grant No.2018KY127, 2017KY479)
the Public Welfare Science and Technology Project of Wenzhou City (grant No.Y20170125, Y20150044)
Received: 9 August 2019
Accepted: 9 July 2020
First Online: 4 August 2020
Ethics approval and consent to participate
: The Medical Ethics Committee of the Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University reviewed this study and confirmed that an official approval of this study by the committee was not required.
: Not applicable.
: The authors declare that they have no competing interests.