11.Bounous G, Papenburg R, Kongshavn PA, Gold P, Fleiszer D. Dietary whey protein inhibits the development of dimethylhydrazine induced malignancy. Clin Invest Med. 1988 Jun;11(3):213-7. http://www.ncbi.nlm.nih.gov/pubmed/3402106
12.Slattery ML, Curtin KP, Edwards SL, Schaffer DM. Plant foods, fiber, and rectal cancer. Am J Clin Nutr 2004;79(2):274-281. http://www.ncbi.nlm.nih.gov/pubmed/14749234
13.Verhoeven DT, Goldbohm RA, van Poppel G, Verhagen H, van den Brandt PA. Epidemiological studies on brassica vegetables and cancer risk. Cancer Epidemiol Biomarkers Prev. 1996 Sep;5(9):733-48. http://www.ncbi.nlm.nih.gov/pubmed/8877066