Speaking at the seventh annual graduate fortnight of the New York Academy of Medicine, 25 October 1934. [Many Stomach Ills Called Functional: Dr. Crohn Says Physicians at Times Err in Diagnosing Neurotic Symptoms, The New York Times, 25 October 1934, http://search.proquest.com.dclibrary.idm.oclc.org/docview/101198139/E252539BA742405APQ/8?accountid=46320]
Burrill Bernard Crohn: Cytaty po angielsku
Speaking at the second annual graduate fortnight of the New York Academy of Medicine, 15 October 1929. [Lays Nervous Ills to Use of Tobacco: Dr. B.B. Crohn Says Excessive Smoking Is More Serious Problem Than Drinking: Warns Against Cigarette: Medical Fortnight Speaker Lists Excitable States, Hyperacidity and Ulcers as Effects, The New York Times, 16 October 1929, http://search.proquest.com.dclibrary.idm.oclc.org/docview/104691648/87889E05D1964D8EPQ/1?accountid=46320]