@misc{indiciae811fa4b3c7f2, title = {Vocal cord dysfunction induced by methacholine challenge testing.}, author = {Patrick J Perkins and Michael J Morris}, year = {2002}, doi = {10.1378/chest.122.6.1988}, url = {https://pubmed.ncbi.nlm.nih.gov/12475837/}, note = {Source identifier: 12475837} }