@misc{9934,
  author = {I. Petersen and A. Johnson and A. Islam and G. Duckworth and D. Livermore and A. Hayward},
  title = {Protective effect of antibiotics against serious complications of common respiratory tract infections: retrospective cohort study with the UK General Practice Research Database},
  year = {2007},
  journal = {Bmj},
  volume = {335},
  number = {7627},
  pages = {982},
  issn = {0959-8138},
  doi = {10.1136/bmj.39345.405243.BE},
}