<style face="normal" font="default" size="100%">Is Crohn's disease caused by a mycobacterium? Comparisons with leprosy, tuberculosis, and Johne's disease.</style>

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0<style face="normal" font="default" size="100%">Is Crohn's disease caused by a mycobacterium? Comparisons with leprosy, tuberculosis, and Johne's disease.</style><style face="normal" font="default" size="100%">Is Crohn's disease caused by a mycobacterium? Comparisons with leprosy, tuberculosis, and Johne's disease.</style>