He, Kan
Liu, Xiaoming
Li, Mingyang
Li, Xueyan
Yang, Hualin
Zhang, Huimao
Article History
Received: 16 February 2020
Accepted: 20 May 2020
First Online: 1 June 2020
Ethics approval and consent to participate
: This research was approved by the First Hospital of Jilin University medical ethics committee and carried out in accordance with the guidelines and regulations of NCCN and Helsinki, and the need for informed consent was waived by the retrospective nature of the study.
: Not Applicable.
: The authors declare that they have no competing interests.