14.09.2006
na podstawie: Colorectal Cancer Surveillance: 2005 Update of an American Society of Clinical Oncology practice guideline
Ch.E. Desch, A.B. Benson III, M.R. Somerfield, P.J. Flynn, C. Krause, Ch.L. Loprinzi, B.D. Minsky, D.G. Pfister, K.S. Virgo, N.J. Petrelli for the American Society of Clinical Oncology
Journal of Clinical Oncology, 2005; 20: 8512-8519