@misc{indiciaeb96d5695887f,
  title = {Oxygen is cost effective.},
  author = {S B Groudine and J Singh},
  year = {1995},
  doi = {10.1097/00000539-199510000-00057},
  url = {https://pubmed.ncbi.nlm.nih.gov/7574041/},
  note = {Source identifier: 7574041}
}