Text and Data Mining valid from 2018-04-04
Received: 22 November 2017
Accepted: 20 March 2018
First Online: 4 April 2018
Ethics approval and consent to participate
: The study was approved by the Ethical Board Review of the Second Affiliated Hospital of Wenzhou Medical University (Wenzhou, Zhejiang, China),the participant consent was written, the reference number was 2,356,543 and was performed in accordance with the ethical standards of the Declaration of Helsinki of 1964.
: Not applicable
: The authors declare that they have no competing interests.
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