Funding for this research was provided by:
the science and technology program project funds of Wenzhou (Y20180106)
Received: 3 June 2019
Accepted: 1 March 2020
First Online: 23 March 2020
Ethics approval and consent to participate
: The study was approved by the Medical Ethics Committee of the First Affiliated Hospital of Wenzhou Medical University (Registry number 2016052). All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: The authors declare no conflict of interest.