Funding for this research was provided by:
the Natural Science Foundation of Guangdong Province (2017A030310205)
Received: 1 April 2019
Accepted: 18 June 2019
First Online: 26 June 2019
Ethics approval and consent to participate
: Not applicable.This study was conducted with the approval of the hospital review boards of the First Affiliated Hospital, Sun Yat-sen University, and was performed according to the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments. Written informed consent was obtained from all of the patients for the US-guided percutaneous RFA procedure. Additional informed consent was not required for this retrospective study.
: All study participants, or their legal guardian, written consent to publish individual person’s data in the manuscript.
: The authors declare that they have no competing interests.