Funding for this research was provided by:
National Natural Science Foundation of China Young Scientists Fund (81601581)
National Natural Science Foundation of China (81600606)
Received: 7 January 2019
Accepted: 22 November 2019
First Online: 2 December 2019
Ethics approval and consent to participate
: The current study was approved by the Institutional Review Board of Sun Yat-sen University Cancer Center, and all the procedures met the basic standards of the Declaration of Helsinki.
: All patients were clearly informed of the potential risks and benefits before undergoing the procedure. The consent also included the publication of the results for scientific research. All patients stated their understanding and signed the informed consent form voluntarily.
: The authors declare that they have no competing interests.