1. Carcinoma of the colon, rectum, and anal canal in young patients;Recalde;Surg Gynecol Obstet,1974
2. Carcinoma of the colon in patients under forty years of age;Sanfelippo;Surg Gynecol Obstet,1974
3. Carcinoma of the colon and rectum in young adults;Hsu;Am J Proctol Gastroenterol Colon Rectal Surg,1982
4. Clinical and histopathological study on cancer of the colon and rectum in persons under forty years of age;Terabe;J Jpn Soc Clin Surg,1984
5. Colorectal cancer in patients less than 40 years of age in Denmark;Bülow;Dis Colon Rectum,1980