TY  - RPRT
TI  - Sampling methods: urine/blood analysis.
AU  - D Y Koller
PY  - 2000
DO  - 10.1164/ajrccm.162.supplement_1.maic-8
UR  - https://pubmed.ncbi.nlm.nih.gov/10934129/
ID  - 10934129
ER  -