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#Jemal, A, Siegel, R, Ward, E, et al. Cancer statistics, 2006. CA Cancer J Clin 2006; 56:106.
#Jemal, A, Siegel, R, Ward, E, et al. Cancer statistics, 2006. CA Cancer J Clin 2006; 56:106.
#Speights, VO, Johnson, MW, Stoltenberg, PH, et al. Colorectal cancer: Current trends in initial clinical manifestations. South Med J 1991; 84:575.
#Speights, VO, Johnson, MW, Stoltenberg, PH, et al. Colorectal cancer: Current trends in initial clinical manifestations. South Med J 1991; 84:575.
#http://www.dana-farber.org/pat/cancer/gastrointestinal/gi-colorectal.asp