@misc{indiciaeb937c110caec,
  title = {Forced expiratory flow-volume relationships. Changes after upper abdominal surgery.},
  author = {G B Drummond and N H Gordon},
  year = {1977},
  doi = {10.1111/j.1365-2044.1977.tb09984.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/869146/},
  note = {Source identifier: 869146}
}