TY  - RPRT
TI  - Methacholine challenge and sputum induction.
AU  - N R Labiris
AU  - F E Hargreave
PY  - 1999
DO  - 10.1136/thx.54.8.750e
UR  - https://pubmed.ncbi.nlm.nih.gov/10490418/
ID  - 10490418
ER  -