@misc{8501,
  author = {Y. Vinogradova and C. Coupland and T. Hill and J. Hippisley-Cox},
  title = {Risks and benefits of direct oral anticoagulants versus warfarin in a real world setting: cohort study in primary care},
  year = {2018},
  journal = {Bmj},
  volume = {362},
  pages = {k2505},
  issn = {0959-8138},
  doi = {10.1136/bmj.k2505},
}