TY  - RPRT
TI  - A heated ultra-high-efficiency filter for mechanical ventilators.
AU  - P Pyle
AU  - M Darlow
AU  - J E Firman
PY  - 1969
DO  - 10.1016/s0140-6736(69)91141-6
UR  - https://pubmed.ncbi.nlm.nih.gov/4178248/
ID  - 4178248
ER  -