1. Cancer prevention: obstacles, challenges, and the road ahead;Meyskens;JNCI,2016
2. Intrinsic versus extrinsic cancer risks: the debate continues;Thomas;Trends in Cancer,2016
3. https://www.dartmouth.edu/∼toxmetal/arsenic/history.html.
4. Arsenic exposure and toxicology: a historical perspective;Hughes;Toxicol Sci,2011
5. U.S. Department of Health, Education and Welfare, public health service;Shimkin,1977