1. Achkar E, Carey W (1988) Small polyps found during fiberoptic sigmoidoscopy in asymptomatic patients. Ann Intern Med 109:880–883.
2. Ahlquist DA, McGill DB, Schwartz S, Taylor WF, Owen RA (1985) Fecal blood levels in health and disease: A study using HemoQuant. N Engl J Med 312:1422–1428.
3. American Cancer Society (1980) Guidelines for the cancer-related checkup. Recommendations and rationale. CA 30:194–240.
4. American Society for Gastrointestinal Endoscopy Guidelines (1986) The role of colonoscopy in the management of patients with colonic polyps.
5. Ansher AF, Lewis JH, Fleischer DE, Cattau EL, Collen MJ, O’Kieffe DA, Korman LY, Benjamin SB (1989) Hyperplastic colonic polyps as a marker for adenomatous colonic polyps. Am J Gastroenterol 84:113–117.