Zhang, X.
Article History
Received: 2 December 2018
Accepted: 29 January 2019
First Online: 13 February 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This study was in accordance with the ethical standards and was approved by The First Affiliated Hospital of Wenzhou Medical University.
: 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 datasets generated and/or analysed during this study are available from the first author and corresponding author on reasonable request.
: Not applicable.