SC Ng, CN Bernstein, MH Vatn, PL Lakatos, EV Loftus Jr, C Tysk, C O'Morain, B Moum, and JF Colombel, Gut. 04, 2013. 62: p. 630-649. [IF: 16.658] The changing epidemiology of inflammatory bowel disease (IBD) across time and geography suggests that environmental factors play a major role in modifying disease expression. Disease emergence in developing nations suggests that epidemiological evolution is related to westernisation of lifestyle and industrialisation. The strongest e