Funding for this research was provided by:
Science and Technology Planning Project of Guangdong Province (2017ZC0279, 2016ZC0166)
Shantou University Medical College Clinical Research Enhancement Initiative (N0201424)
Collaborative and Creative Center, Molecular Diagnosis and Personalized Medicine, Shantou University, Guangdong, China (2501220302)
Special Fund for Guangdong Science and Technology Innovation Strategy (180918114960704)
Project category of Medical and Health, Shantou, Guangdong Province, China (190816095262212)
Science and Technology Special Fund of Guangdong Province, China (2019-132, 190829105556145)
Received: 6 June 2020
Accepted: 29 October 2020
First Online: 12 January 2021
Ethics approval and consent to participate
: The Cancer Hospital of Shantou University Medical College institutional ethics committee approved this retrospective study (IRB No. 2019036), and the need for informed consent has been waived. This study complies with the standards of the Declaration of Helsinki and current ethics guidelines.
: Not applicable.
: The authors have no conflicts of interest to declare.