@misc{7704,
  author = {H. Ahmed and H. Whitaker and D. Farewell and J. Hippisley-Cox and S. Noble},
  title = {Respiratory tract infection and risk of bleeding in oral anticoagulant users: self-controlled case series},
  year = {2021},
  journal = {Bmj},
  volume = {375},
  pages = {e068037},
  issn = {0959-8138},
  doi = {10.1136/bmj-2021-068037},
}