Comment on

• A clinical trial of antioxidant vitamins to prevent colorectal adenoma. Polyp Prevention Study Group.

  Greenberg ER, Baron JA, Tosteson TD, Freeman DH Jr, Beck GJ, Bond JH, Colacchio TA, Coller JA, Frankl HD, Haile RW, et al. Greenberg ER, et al. N Engl J Med. 1994 Jul 21;331(3):141-7. doi: 10.1056/NEJM199407213310301. N Engl J Med. 1994. PMID: 8008027 Clinical Trial.