Data were collected using SEER*Stat Software (version 8.3.6, https://seer.cancer.gov/seerstat/). All statistical analyses were performed in R software (version 3.6.1, http://www.r-project.org) with the R package as the following: survival (survival">http://CRAN.R-project.org/package=survival), plyr (http://CRAN.R-project.org/package=plyr), rms (http://CRAN.R-project.org/package=rms), cmprsk (http://CRAN.R-project.org/package=cmprsk), mstate(http://CRAN.R-project.org/package=plyr), ggplot2 (ggplot2">http://CRAN.R-project.org/package=ggplot2), nomogramEx (http://CRAN.R-project.org/package= nomogramEx).
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