Funding for this research was provided by:
National Key Scientific Instrument and Equipment Development Projects of China (2017YFC0113100)
Received: 19 February 2020
Accepted: 21 May 2020
First Online: 5 June 2020
Ethics approval and consent to participate
: This study was approved by the ethics committee of Sichuan Cancer Hospital, and informed consent was taken from all recruited patients.
: Written informed consent for publication was obtained from all participants.
: The authors declare that they have no competing interests.