Funding for this research was provided by:
Project of Liaoning Natural Science Foundation (2015020544)
Text and Data Mining valid from 2019-07-24
Received: 25 March 2019
Accepted: 10 July 2019
First Online: 24 July 2019
Ethics approval and consent to participate
: This research has been conducted in accordance with the Declaration of Helsinki. The study protocol has been approved by the Ethics Committee of the Affiliated Shengjing Hospital of China Medical University. Patients signed the informed consent form.
: All listed authors have actively participated in the study and have read and approved the submitted manuscript.
: The authors declare that they have no competing interests.