@misc{9736,
  author = {R. Armstrong and J. West and T. Card},
  title = {Risk of cancer in inflammatory bowel disease treated with azathioprine: a UK population-based case-control study},
  year = {2010},
  journal = {Am J Gastroenterol},
  volume = {105},
  number = {7},
  pages = {1604-9},
  issn = {0002-9270},
  doi = {10.1038/ajg.2009.745},
}