@misc{indiciae29ff108613de,
  title = {A grading system for direct laryngoscopy.},
  author = {R M Levitan and J E Hollander and E A Ochroch},
  year = {1999},
  doi = {10.1046/j.1365-2044.1999.1133f.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/10541693/},
  note = {Source identifier: 10541693}
}