RT Journal Article SR Electronic T1 The Differentiation of Noninvasive and Invasive Carcinoma Arising in Intestinal Polyp JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 62 OP 66 VO 19 IS 2 A1 Fisher, Edwin R. A1 Turnbull, Rupert B. YR 1952 UL http://www.ccjm.org/content/19/2/62.abstract AB