Citation

Longnecker MP, Martin-Moreno JM, Knekt P, Nomura AM, Schober SE, Stähelin HB, Wald NJ, Gey KF, Willett WC. 1992. Serum alpha-tocopherol concentration in relation to subsequent colorectal cancer: pooled data from five cohorts. Journal of the National Cancer Institute 84(6):430-445.