@misc{9107,
  author = {J. Nielen and B. van den Bemt and A. Boonen and P. Dagnelie and P. Emans and N. Veldhorst and A. Lalmohamed and T. van Staa and F. de Vries},
  title = {Identification of antithrombotic drugs related to total joint replacement using anonymised free-text notes: a search strategy in the Clinical Practice Research Datalink},
  year = {2015},
  journal = {BMJ Open},
  volume = {5},
  number = {11},
  pages = {e009017},
  issn = {2044-6055},
  doi = {10.1136/bmjopen-2015-009017},
}