David T. Rubin,a Russell D. Cohen,a William J. Sandborn,b Gary R. Lichtenstein,c Jeffrey Axler,d Robert H. Riddell,e Cindy Zhu,f Andrew C. Barrett,f Enoch Bortey,f William P. Forbesf
aInflammatory Bowel Disease Center, University of Chicago Medicine, Chicago, IL, USA bDivision of Gastroenterology, University of California [UC] San Diego and UC San Diego Health System, San Diego, CA, USA cDivision of Gastroenterology, Perelman School of Medicine of the University of Pennsylvania, Philadelphia, PA, USA dToronto Digestive Disease Associates, Toronto, ON, Canada eDepartment of Pathology and Laboratory Medicine, Mt Sinai Hospital, Toronto, ON, Canada fSalix Pharmaceuticals, Raleigh, NC, USA
This article has been updated to correct an error to the n value for patients randomised to treatment in Figure 1.