@misc{indiciaebcbd0779b73c,
  title = {Spirometry and oral contraceptives.},
  author = {S H Freedman and N E Anderson},
  year = {1973},
  doi = {10.1016/s0002-9378(15)33134-3},
  url = {https://pubmed.ncbi.nlm.nih.gov/4713132/},
  note = {Source identifier: 4713132}
}