@misc{indiciae1ead0935eeef,
  title = {Letter: STI in COPD.},
  author = {J S Alpert and M H Crawford and J S Karliner and R A O'Rourke},
  year = {1975},
  doi = {10.1161/01.cir.52.2.354},
  url = {https://pubmed.ncbi.nlm.nih.gov/1149215/},
  note = {Source identifier: 1149215}
}