Li, Qing
Yang, Shunyu
Xie, Ming
Wu, Xiaoming
Huang, Liping
Ruan, Weiqing
Liu, Yungang
Funding for this research was provided by:
Science and Technology Planning Project of Guangdong Province (2014A020212630)
Article History
Received: 7 December 2019
Accepted: 27 March 2020
First Online: 16 April 2020
Ethics approval and consent to participate
: All participants provided written informed consent, and the study was approved by the Nanfang Hospital Ethics Committee. Since no intervention measures or invading procedures on the subjects in this study were present, our institutional ethical committee suggested that no ethical approval documents were required. No experimental animals were used in this study. We announce that there is no violation to commonly accepted ethical principles in this study.
: Not applicable.
: The authors declare that they have no competing interests.