The present study aimed to examine the association between cigarette smoking, alcohol consumption and colorectal cancer risk among Korean adults.Data from the Korean Multi-center Cancer Cohort between 1993 and 2005 were analyzed. The study population comprised 18,707 subjects aged older than 20 years old. The subjects were followed until December 31, 2011 (median follow-up of 11.2 years). The Cox proportional hazard model was used to estimate the hazard ratio (HR) and 95
作者：Sooyoung, Cho；Aesun, Shin；Sue K, Park；Hai-Rim, Shin；Soung-Hoon, Chang；Keun-Young, Yoo
来源：Journal of cancer prevention 2015 年 20卷 2期
