Wang, Kai
Zhang, Jing-wen
Min, Shao-xiong
Xu, Xin-yi
An, Sheng-li http://orcid.org/0000-0002-2811-7759
Article History
Received: 4 March 2019
Accepted: 28 August 2019
First Online: 12 September 2019
Ethics approval and consent to participate
: The study protocol was approved by the Institutional Review Board at Zhujiang Hospital, Southern Medical University, Guangzhou, China (NO.2013-BLK-009). Written informed consent was obtained from all participants for entry into the database and use of their data for research.
: Not applicable.
: The authors declare that they have no competing interests.