TY  - RPRT
TI  - Letter: asthma mortality associated with pneumothorax and intermittent positive-pressure breathing.
AU  - I Grant
PY  - 1975
DO  - 10.1016/s0140-6736(75)92528-3
UR  - https://pubmed.ncbi.nlm.nih.gov/49496/
ID  - 49496
ER  -