TY  - RPRT
TI  - Improved lung function and symptom control with formoterol on demand in asthma.
AU  - D Cheung
AU  - H C J van Klink
AU  - R Aalbers
AU  - OZON study group
PY  - 2006
DO  - 10.1183/09031936.06.00006805
UR  - https://pubmed.ncbi.nlm.nih.gov/16507849/
ID  - 16507849
ER  -