1. Are metaplasias in colorectal adenomas truly metaplasias?;Bansal;Am J Pathol,1984
2. Mixed endocrine-exocrine tumors of the gastrointestinal tract;Capella;Semin Diagn Pathol,2000
3. World Health Organization. Classification of Tumours, Pathology and Genetics;Capella,2000
4. Hyperplastic lesions of the gastrointestinal endocrine cells;Dayal;Am J Surg Pathol,1987
5. Carcinoid tumor and inflammatory bowel disease: a study of eleven cases and review of the literature;Greenstein;Am J Gastroenterol,1997