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2. The National Veterans Administration Surgical Risk Study: risk adjustment for the comparative assessment of the quality of surgical care;Khuri;J Am Coll Surg,1995
3. Follow-up after colorectal cancer resection: is it worthwhile?;Northover,2000
4. Preoperative Evaluation;Lavery,1995
5. Is preoperative computerized tomography useful in assessing patients with colorectal carcinoma?;Kerner;Dis Colon Rectum,1993