@misc{indiciaeb17d54fe9d27,
  title = {Letter: Lecithin/sphingomyelin ratio in tracheal aspirate.},
  author = {D Peleg and J A Goldman},
  year = {1976},
  doi = {10.1016/s0140-6736(76)91583-x},
  url = {https://pubmed.ncbi.nlm.nih.gov/58238/},
  note = {Source identifier: 58238}
}