Funding for this research was provided by:
Hebei Natural Science Foundation (H2018206347)
Capital Marathon Foundation of Chinese Cancer Association (LC2016W11)
Text and Data Mining valid from 2019-03-27
Received: 20 June 2018
Accepted: 6 March 2019
First Online: 27 March 2019
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of Hebei Medical University and signed consent was obtained from each patient.
: Not applicable.
: The authors declare that they have no competing interest.
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