1. V.A. Sparnins L.K.T. Lam L.W. Wattenberg Effects of Coffee on Glutathione S-Transferase (GST) Activity and 7,12-Dimethylbenz (A) Anthracene (DMBA)-Induced Neoplasia. Proc. 1981 Annual Meetings of American Association for Cancer Research and American Society of Clinical Oncology, Washington, DC, Volume 22 1981
2. Centers for Disease Control Foodborne Disease Outbreaks Annual Summary 1978, Revised and Reissued February, 1981. Public Health Service, Atlanta, Georgia 1981
3. Estimate of Cases of Food- and Waterborne Illness in Canada and the United States