TY  - RPRT
TI  - Induced sputum examination.
AU  - F E Hargreave
AU  - E Pizzichini
AU  - M Pizzichini
PY  - 1998
DO  - 10.1016/s0091-6749(98)70370-7
UR  - https://pubmed.ncbi.nlm.nih.gov/9564818/
ID  - 9564818
ER  -