Funding for this research was provided by:
Ministry of Science and Technology National Key Research and Development Program of China (2017YFB1104100)
Doctoral Scientific Research Foundation of Henan Provincial People’s Hospital (Huang Jincheng2018)
Text and Data Mining valid from 2019-11-29
Received: 9 June 2019
Accepted: 7 November 2019
First Online: 29 November 2019
Ethics approval and consent to participate
: This retrospective study was approved by the Ethics Committee of Henan Provincial People’s Hospital and performed in accordance with the Helsinki Declaration. All patients agreed to participate and provided written informed consent prior to treatment.
: Not applicable.
: The authors declare that they have no competing interests.