@misc{indiciaeab0ae066c67d,
  title = {Amniotic fluid lecithin-sphingomyelin ratio.},
  author = {J F Roux},
  year = {1973},
  doi = {10.1016/0002-9378(73)90543-7},
  url = {https://pubmed.ncbi.nlm.nih.gov/4688595/},
  note = {Source identifier: 4688595}
}