Retrospective Study
Copyright ©The Author(s) 2023.
World J Gastrointest Oncol. Aug 15, 2023; 15(8): 1461-1474
Published online Aug 15, 2023. doi: 10.4251/wjgo.v15.i8.1461
Figure 1
Figure 1 Flowchart of the study design and patient selection. ICD-O-3: International Classification of Diseases for Oncology, Third Edition; SEER: Surveillance, Epidemiology, and End Results.