Text and Data Mining valid from 2018-10-03
Received: 24 July 2018
Accepted: 29 August 2018
First Online: 3 October 2018
Ethics approval and consent to participate
: The study was approved by the Ethics Committee of The First People’s Hospital of Xuzhou. Signed written informed consents were obtained from the patients and/or guardians.
: Not applicable.
: The authors declare that they have no competing interests.
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