@misc{indiciaeea906dd6cb8f,
  title = {Nosocomial pneumonia. A continuing major problem.},
  author = {J R Graybill and L W Marshall and P Charache and C K Wallace and V B Melvin},
  year = {1973},
  doi = {10.1164/arrd.1973.108.5.1130},
  url = {https://pubmed.ncbi.nlm.nih.gov/4201016/},
  note = {Source identifier: 4201016}
}