Article History
Received: 29 November 2019
Accepted: 27 April 2020
First Online: 2 May 2020
Compliance with ethical standards
:
: The authors declare that they have no competing interests.
: Our study was approved by the independent ethical committee/institutional review board of Fudan University Shanghai Cancer Center (Shanghai Cancer Center Ethical Committee). All patients gave their written informed consent before inclusion in this study.