Funding for this research was provided by:
Guangdong Science and Technology Department (NO.20140212, NO.20160215)
Text and Data Mining valid from 2020-01-30
Received: 28 July 2019
Accepted: 23 January 2020
First Online: 30 January 2020
Ethics approval and consent to participate
: This study was approved by research Southern Pearl River Hospital Ethics Committee Medical University (No. 2016 HXNK 007), and all patients signed informed consents.
: Not applicable.
: The authors declare that they have no competing interests.