TY  - RPRT
TI  - Letter: Age-coding of endotracheal tubes.
AU  - B Hogarth
PY  - 1976
DO  - 10.1111/j.1365-2044.1976.tb12392.x
UR  - https://pubmed.ncbi.nlm.nih.gov/937708/
ID  - 937708
ER  -