TY  - RPRT
TI  - Testing for exercise limitation in obstructive lung disease.
AU  - M Newton
AU  - K A Webb
AU  - D E O'Donnell
PY  - 1999
DO  - 10.1378/chest.115.6.1755-a
UR  - https://pubmed.ncbi.nlm.nih.gov/10378586/
ID  - 10378586
ER  -