@misc{8451,
  author = {J. O\textquoterightSullivan and S. Stevens and J. Oke and F. Hobbs and C. Salisbury and P. Little and B. Goldacre and C. Bankhead and J. Aronson and C. Heneghan and R. Perera},
  title = {Practice variation in the use of tests in UK primary care: a retrospective analysis of 16 million tests performed over 3.3 million patient years in 2015/16},
  year = {2018},
  journal = {BMC Med},
  volume = {16},
  number = {1},
  pages = {229},
  issn = {1741-7015},
  doi = {10.1186/s12916-018-1217-1},
}