Text and Data Mining valid from 2018-11-12
Received: 1 September 2017
Accepted: 25 October 2018
First Online: 12 November 2018
Ethics approval and consent to participate
: This study was carried out in accordance with the approved guidelines by the Ethics Committee of Shandong Tumor Hospital Affiliated to Shandong University (No. SDTHEC20171105) and patients have signed an informed consent.
: Not applicable.
: All the authors have no conflict of interest for this study.
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