Ren, Caiyue
Li, Mingli
Zhang, Yunyan
Zhang, Shengjian
Article History
Received: 26 February 2020
Accepted: 26 November 2020
First Online: 11 December 2020
Ethics approval and consent to participate
: Our Institutional Review Boards (Shanghai Proton and Heavy Ion Center and Fudan University Shanghai Cancer Center Medical Ethics Committees) approved this retrospective study and waived the need for informed consent from patients.
: All authors have read and approved the content and agree to submit for consideration for publication in the journal.
: The authors declare that they have no competing interests.