@misc{indiciaee21d6a79c12e,
  title = {Determining fetal lung maturity: a sensitive surfactant method.},
  author = {L W Johnson},
  year = {1977},
  doi = {10.1016/0002-9378(77)90743-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/578389/},
  note = {Source identifier: 578389}
}