@misc{9542,
  author = {S. Langan and R. Groves and T. Card and M. Gulliford},
  title = {Incidence, mortality, and disease associations of pyoderma gangrenosum in the United Kingdom: a retrospective cohort study},
  year = {2012},
  journal = {J Invest Dermatol},
  volume = {132},
  number = {9},
  pages = {2166-70},
  issn = {0022-202x},
  doi = {10.1038/jid.2012.130},
}