Odigie, V I Anatomical subsite and diagnostic implications of colorectal cancer in zaria (Guinea savannah)-1981-2005. [electronic resource] - The Nigerian postgraduate medical journal Mar 2009 - 35-9 p. digital Publication Type: Journal Article ISSN: 1117-1936 Subjects--Topical Terms: Colorectal Neoplasms--epidemiologyGuineaHumansNigeria--epidemiologyProspective StudiesRetrospective Studies