Text and Data Mining valid from 2019-08-09
Received: 25 June 2019
Accepted: 1 August 2019
First Online: 9 August 2019
Ethics approval and consent to participate
: This study was approved by the Research and Ethical Committee of Shengjing Hospital of China Medical University, China. The written informed consents were obtained from all of the participating patients prior to clinical data.
: The submission of this manuscript has been approved by all authors.
: The authors confirm that there are no conflicts of interest.