@misc{indiciaeba0a624f29b0, title = {Methacholine challenge and sputum induction.}, author = {N R Labiris and F E Hargreave}, year = {1999}, doi = {10.1136/thx.54.8.750e}, url = {https://pubmed.ncbi.nlm.nih.gov/10490418/}, note = {Source identifier: 10490418} }