Text and Data Mining valid from 2018-10-24
Received: 19 June 2018
Accepted: 9 October 2018
First Online: 24 October 2018
Ethics approval and consent to participate
: This experiment was performed in accordance with institutional guidelines of the Kaifeng Central Hospital and Use Committee guidelines.
: The study was undertaken with the author’s consent.
: The authors declare that they have no competing interests.
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