TY  - RPRT
TI  - Extrapolation of methacholine PC(20).
AU  - Beth E Davis
AU  - Donald W Cockcroft
PY  - 2002
DO  - 10.1378/chest.122.4.1499
UR  - https://pubmed.ncbi.nlm.nih.gov/12377897/
ID  - 12377897
ER  -