TY  - RPRT
TI  - Grading asthma severity: using the APS component of the Apache II system.
AU  - A C Day
AU  - A P Rankin
AU  - J A Judson
PY  - 1993
DO  - 10.1007/bf01694774
UR  - https://pubmed.ncbi.nlm.nih.gov/8366231/
ID  - 8366231
ER  -