@article{breivik2008-18487245,
  author  = {Breivik, H. and Borchgrevink, P. C. and Allen, S. M. and Rosseland, L. A. and Romundstad, L. and Hals, E. K. and Kvarstein, G. and Stubhaug, A.},
  title   = {{Assessment of pain}},
  journal = {British journal of anaesthesia},
  year    = {2008},
  doi     = {10.1093/bja/aen103},
  pmid    = {18487245},
  url     = {https://doi.org/10.1093/bja/aen103}
}