TY  - RPRT
TI  - Predicting difficult intubation.
AU  - C M Frerk
PY  - 1991
DO  - 10.1111/j.1365-2044.1991.tb09909.x
UR  - https://pubmed.ncbi.nlm.nih.gov/1781521/
ID  - 1781521
ER  -