@misc{indiciae951ee5055021,
  title = {Study duration and validity.},
  author = {A G Logan},
  year = {1999},
  doi = {10.1161/01.hyp.34.6.e11},
  url = {https://pubmed.ncbi.nlm.nih.gov/10601135/},
  note = {Source identifier: 10601135}
}