TY  - RPRT
TI  - Difficult tracheal intubation: a retrospective study.
AU  - G L Samsoon
AU  - J R Young
PY  - 1987
DO  - 10.1111/j.1365-2044.1987.tb04039.x
UR  - https://pubmed.ncbi.nlm.nih.gov/3592174/
ID  - 3592174
ER  -