1. Relationships of polyps of the colon to colonic cancer;Spratt;Ann Surg,1958
2. Do adenomatous polyps of the colon become malignant?;Castleman;New Eng J Med,1962
3. The biological characteristics of colonic and rectal neoplasms with refutation of the concept that adenomatous polyps are highly premalignant tumors;Ackerman;Acta Un Int Cancr,1964
4. Current approach to the polyp-cancer controversy (editorial);Castleman;Gastroenterology,1966
5. Benign and malignant adenomatous polyps and papillary adenomas of colon and rectum; analysis of 1856 tumors in 1335 patients;Grinnel;Int Abstr Surg,1958