@misc{indiciae457c74ff8a29,
  title = {Guanethidine, exercise, and hypotension.},
  author = {L R Barker},
  year = {1976},
  doi = {10.1016/s0140-6736(76)92052-3},
  url = {https://pubmed.ncbi.nlm.nih.gov/63762/},
  note = {Source identifier: 63762}
}