Abstract:excluded patients with unclear basic information (such as sex, histology or cause of death), multiple primary malignant tumors and M1 disease. All data were analyzed using the R version 3.6.2 software. And propensityscore matched (PSM) analysis was used to match the baseline characteristics between PORT group and non-PORT group. Kaplan-Meier method was used to estimate overall survival (OS) and cancer specific survival (CSS). Univariable and multivariable Cox proportional hazards models were adopted to estimat… Show more
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