• Nutrition classics from The Journal of Biological Chemistry, 138, 21–33, 1941. Studies on the hemorrhagic sweet clover disease. IV. The isolation and crystallization of the hemorrhagic agent

by Harold A. Campbell and Karl Paul Link. Nutr. Rev. (1974). 32, 244–6.

• Danielson, P.B. (2002). The cytochrome P450 superfamily: biochemistry, evolution and drug metabolism in humans. Current Drug Metabolism, 3(6), 561–97.

• Myung, S.K., Ju, W., Cho, B., Oh, S.W., Park, S.M., and Koo, B.K. (2013). Efficacy of vitamin and antioxidant supplements in prevention of cardiovascular disease: systematic review and meta-analysis of randomized controlled trials. British Medical Journal, 2013;346:f10