chapter  1
Conversation with Burrill B. Crohn, Leon Ginzburg, and Gordon Oppenheimer 63 Years after the Discovery of Crohn's Disease
Pages 8

HDJ: I always blamed that delay on the tight hold that the Department of Pathology under Paul Klemperer had on medical conceptual thinking at Mount Sinai.

BBC: You are right. Dr. Otani was also a great pathologist. but he clung firmly to the belief that the ileocecal valve separated ileitis from ulcerative colitis. Ileitis north, ulcerative colitis south of the valve. Others, like Wells, had been writing about granulomatous colitis for some years before Dick Marshak and, finally, LockhartMummery and Morson published their paper.