Gut. 2013 Apr; 62(4):630-49.
Bernstein CN, Ng SC, Lakatos PL, Moum B, Loftus EV Jr, Epidemiology and Natural History Task Force of the International Organization for the Study of Inflammatory Bowel Disease (IOIBD).
Gut. 2013 Apr; 62(4):630-49.
Bernstein CN, Ng SC, Lakatos PL, Moum B, Loftus EV Jr, Epidemiology and Natural History Task Force of the International Organization for the Study of Inflammatory Bowel Disease (IOIBD).