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. 2016 Mar 1;124(3):A49–A54. doi: 10.1289/ehp.124-A49

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graphic file with name ehp.124-A49.g001.jpg — Inflammatory bowel disease (IBD) has become common in the Western world, but its causes remain unclear. With the dramatic increase of cases in Asia in recent years—echoing the disease’s drastic rise in the West decades earlier—investigators have another shot at studying environmental contributors to IBD as it emerges in new populations.

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