1. Silverberg, E., Boring, C.C., Squires, T.S.: Cancer statistics, 1990. CA40:9, 1991
2. Wynder, E.L., Reddy, B.S.: Epidemiology of cancer of the colon. In Cancer Epidemiology in the USA and USSR, D.L. Levin, editor, Maryland, National Institutes of Health Publication No. 20-2044, 1980, pp. 81–86
3. Cancer Statistics, 1989. CA39:3, 1989
4. Ziegler, R.G., Devesa, S.S., Braumeni, J.F. Jr.: Epidemiology patterns of colorectal cancer. In Important Advances in Oncology, V.T. Devita, Jr., S. Hellman, S.A. Rosenberg, editors, Philadelphia, J.B. Lippincott, 1986, pp.209–232
5. Seidman, H., Mashunski, M.H., Gelb, S.K., Silverberg, E.: Probabilities of eventually developing or dying of cancer—United States, 1985. CA35:36, 1985