TY  - RPRT
TI  - Upper airway sampling.
AU  - T Frischer
AU  - E Baraldi
PY  - 2000
DO  - 10.1164/ajrccm.162.supplement_1.maic-7
UR  - https://pubmed.ncbi.nlm.nih.gov/10934128/
ID  - 10934128
ER  -