@misc{indiciae5cff3dc84154,
  title = {Ipratropium bromide in COPD and asthma.},
  author = {J Atsmon},
  year = {1988},
  doi = {10.1097/00000441-198808000-00015},
  url = {https://pubmed.ncbi.nlm.nih.gov/2969679/},
  note = {Source identifier: 2969679}
}