References:
1.Routine Vitamin Supplementation to Prevent Cancer and Cardiovascular Disease, Topic Page. June 2003. U.S. Preventive Services Task Force. http://www.uspreventiveservicestaskforce.org/uspstf/uspsvita.htm
2.Bjelakovic G, Nikolova D, Gluud LL, Simonetti RG, Gluud C. Antioxidant supplements for prevention of mortality in healthy participants and patients with various diseases. Cochrane Database Syst Rev, 2012 Mar 14;3:CD007176. http://www.ncbi.nlm.nih.gov/pubmed/22419320
3.Bjelakovic G, Nikolova D, Gluud LL, Simonetti RG, Gluud C. Mortality in randomized trials of antioxidant supplements for primary and secondary prevention: systematic review and meta-analysis. JAMA. 2007 Feb 28;297(8):842-57. http://www.ncbi.nlm.nih.gov/pubmed/17327526