TY  - RPRT
TI  - Fenestrated tracheostomy tubes.
AU  - M J Lange
PY  - 1973
DO  - 10.1016/s0140-6736(73)92303-9
UR  - https://pubmed.ncbi.nlm.nih.gov/4124920/
ID  - 4124920
ER  -