Funding for this research was provided by:
Beijing Hope Marathon Special Fund of Chinese Cancer Foundation (LC2019B11)
Sanming Project of Medicine in Shenzhen, Cancer Pain Treatment and Perioperative Medical Team of Professor Li Sun in Cancer Hospital
Article History
Received: 11 August 2020
Accepted: 13 November 2020
First Online: 26 November 2020
Compliance with ethical standards
:
: All the authors declare that they have no conflict of interest.
: This article does not contain any studies with animals performed by any of the authors. All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.