@misc{indiciae030208ffbfeb,
  title = {Improvised tub exercise board.},
  author = {E KNOWLTON},
  year = {1954},
  doi = {10.1093/ptj/34.9.450},
  url = {https://pubmed.ncbi.nlm.nih.gov/13194375/},
  note = {Source identifier: 13194375}
}