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APA Citation
Kirsch, R., Pentecost, M., de M Hall, P., Epstein, D. P., Watermeyer, G., & Friederich, P. W. (2006). role of colonoscopic biopsy in distinguishing between Crohn's disease and intestinal tuberculosis. Journal of clinical pathology, 59(8), 840–844. http://access.bl.uk/ark:/81055/vdc_100135147970.0x000039