Received: 18 January 2019
Accepted: 31 July 2019
First Online: 9 August 2019
Ethics approval and consent to participate
: The study was approved by the Ethics Committee of The Second Affiliated Hospital of Nanchang University. Written informed consents were obtained from all patients to perform radiotherapy or targeted therapy. Given that this is a retrospective study, we did not obtain written informed consents from all patients to participate in this study.
: Not applicable.
: The authors declare that they have no competing interests.