TY  - RPRT
TI  - Vocal cord dysfunction induced by methacholine challenge testing.
AU  - Patrick J Perkins
AU  - Michael J Morris
PY  - 2002
DO  - 10.1378/chest.122.6.1988
UR  - https://pubmed.ncbi.nlm.nih.gov/12475837/
ID  - 12475837
ER  -