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Timeline of events from baseline to death of the patient. cfDNA, cell-free DNA; nCRT, neoadjuvant chemoradiotherapy; CROSS, ChemoRadiotherapy for Oesophageal cancer followed by Surgery Study; CRE, clinical response evaluation; EGD, esophago-gastro-duodenoscopy; PET-CT, positron emission tomography plus computed tomography; EUS-FNA, endoscopic ultrasonography with fine-needle aspiration; TRG, tumor regression grade.
