@misc{indiciae916cc1f456ca,
  title = {Combined single subject trials.},
  author = {T Johannessen and D Fosstvedt and H Petersen},
  year = {1991},
  doi = {10.3109/02813439109026577},
  url = {https://pubmed.ncbi.nlm.nih.gov/2041924/},
  note = {Source identifier: 2041924}
}