@article{LoetschSipilaeDimovaetal.2018,
  author    = {J{\"o}rn L{\"o}tsch and Reetta M. Sipil{\"a} and Violeta Dimova and Eija Kalso},
  title     = {Machine-learned selection of psychological questionnaire items relevant to the development of persistent pain after breast cancer surgery},
  journal   = {British journal of anaesthesia},
  volume    = {121},
  number    = {5},
  pages     = {1123 -- 1132},
  doi       = {10.1016/j.bja.2018.06.007},
  year      = {2018},
}