TY  - RPRT
TI  - Time for standardization.
AU  - Peter D Bridge
AU  - Sheila A McKenzie
PY  - 2003
DO  - 10.1164/ajrccm.167.4.957
UR  - https://pubmed.ncbi.nlm.nih.gov/12588719/
ID  - 12588719
ER  -