TY  - RPRT
TI  - Observer variation in spirometry.
AU  - S W Rosner
AU  - S Abraham
AU  - C A Caceres
PY  - 1965
DO  - 10.1378/chest.48.3.265
UR  - https://pubmed.ncbi.nlm.nih.gov/5830640/
ID  - 5830640
ER  -