@misc{indiciae404c1d6ce6dc,
  title = {Interrater variability in a modified Norton Scale.},
  author = {A C Ek and P Bjurulf},
  year = {1987},
  doi = {10.1111/j.1471-6712.1987.tb00609.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/3447259/},
  note = {Source identifier: 3447259}
}