1. Chemoprevention of cancer with retinoids;Sporn;Fed. Proc,1979
2. Chemoprevention of cancer;Wattenberg;Cancer Res,1985
3. Cancer prevention: recent progress and future opportunities;Weinstein;Cancer Res.,1991
4. Cancer chemoprevention;Tanaka;Cancer J.,1992
5. The National Cancer Institute's intervention trials;Cullen;Cancer,1988