Smoking status before and after colorectal cancer diagnosis and mortality in Korean men: A population-based cohort study.
Doeun JangSunho ChoeJi-Won ParkSeung-Yong JeongAesun ShinPublished in: Cancer medicine (2020)
Smoking before cancer diagnosis rather than postdiagnosis has stronger impact on prognosis colorectal cancer patients, and quitting smoking may improve survival, especially among early stage colorectal cancer patients.