@misc{9586,
  author = {I. Mackenzie and T. MacDonald and A. Thompson and S. Morant and L. Wei},
  title = {Spironolactone and risk of incident breast cancer in women older than 55 years: retrospective, matched cohort study},
  year = {2012},
  journal = {Bmj},
  volume = {345},
  pages = {e4447},
  issn = {0959-8138},
  doi = {10.1136/bmj.e4447},
}