In Reply: Overall Survival of Resectable Metastatic Colon Cancer Treated With Neoadjuvant Chemotherapy or Adjuvant Chemotherapy in Non-academic Program

This letter to the editor responds to the letter from Su et al, regarding concerns related to immortal time bias that may partially account for recently published study results.

Automated summary

This letter responds to concerns raised by Su et al regarding immortal time bias, which may explain some of the findings in a recently published study.