@misc{indiciaee7f73540ea51,
  title = {The "free thyroxine index".},
  author = {P P Smyth and D K O'Donovan},
  year = {1969},
  doi = {10.1007/bf02955461},
  url = {https://pubmed.ncbi.nlm.nih.gov/4189975/},
  note = {Source identifier: 4189975}
}