@misc{indiciaeae59376d18d4,
  title = {Chronic obstructive lung disease after practolol.},
  author = {P Bartsch},
  year = {1977},
  doi = {10.1016/s0140-6736(77)91237-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/67318/},
  note = {Source identifier: 67318}
}