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. 2020 Mar 4;20:182. doi: 10.1186/s12885-020-6682-1

Fig. 3.

Fig. 3

Adjusted Kaplan-Meier curve illustrating overall survival from the date of initiation of chemoradiotherapy or bio-radiotherapy stratified according to whether they developed aspiration pneumonia. Vertical dashes indicate censored observations. HR: hazard ratio, CI: confidence interval, OS: overall survival