@misc{indiciae12fe38b27621,
  title = {Lung function and postural changes during pregnancy.},
  author = {O Nørregaard and P Schultz and A Ostergaard and R Dahl},
  year = {1989},
  doi = {10.1016/s0954-6111(89)80127-1},
  url = {https://pubmed.ncbi.nlm.nih.gov/2623214/},
  note = {Source identifier: 2623214}
}