A comparison of endoscopic ultrasound, magnetic resonance imaging, and exam under anesthesia for evaluation of Crohn's perianal fistulas.
By D. A. Schwartz, M. Wiersema, K. Dudiak, J. Fletcher, J. Clain, W. Tremaine, A. Zinsmeister, I. Norton, L. Boardman, R. Devine and 5 more. Gastroenterology, 2001
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