The inflammatory bowel diseases and ambient air pollution: a novel association.

"We acknowledge Dr Mary Thompson and Harshvinder Bhullar from EPIC for providing data from the THIN database. The corresponding author has the right to grant on behalf of all authors and does grant on behalf of all authors, an exclusive license (or non-exclusive for government employees) on a worldwide basis to the BMJ Publishing Group and its licensees to permit this article (if accepted) to be published in Gut editions and any other BMJPGL products to exploit all subsidiary rights, as set out in our license (http://group.bmj.com/products/journals/ instructions-for-authors/licence-forms)."

"Financial support: This work was supported by an operating grant from the Broad Medical Research Program of the Broad Foundation and from the CCFC Chair in IBD Research. G.G.K. is supported through a New Investigator Award from the Canadian Institute of Health Research and a Population Health Investigator Award from the Alberta Heritage Foundation for Medical Research."