Volume expired during 1.0 s of forced expiration^post 0.25 mg/mL methacholine:Vol:Pt:Respiratory system:Qn
volume expired during 1.0 s of forced expiration^post 0.25 mg/ml methacholine:vol:pt:respiratory system:qn
FEV1 --post 0.25 mg/mL methacholine
fev1 --post 0.25 mg/ml methacholine