TY  - RPRT
TI  - Testing airway responsiveness using inhaled methacholine or histamine.
AU  - A James
AU  - G Ryan
PY  - 1997
DO  - 10.1111/j.1440-1843.1997.tb00061.x
UR  - https://pubmed.ncbi.nlm.nih.gov/9441133/
ID  - 9441133
ER  -