TY  - RPRT
TI  - Why do sputum cultures fail to yield pathogens?
AU  - M W Burns
AU  - L Devitt
AU  - D H Bryant
PY  - 1973
DO  - 10.5694/j.1326-5377.1973.tb76549.x
UR  - https://pubmed.ncbi.nlm.nih.gov/4148395/
ID  - 4148395
ER  -