@article {14, editor = {,}, title = {On demand use of β2-agonists led to better asthma control than regular use in moderate to severe asthma}, volume = {4}, number = {1}, pages = {14--14}, year = {2001}, doi = {10.1136/ebn.4.1.14}, publisher = {Royal College of Nursing}, issn = {1367-6539}, URL = {https://ebn.bmj.com/content/4/1/14}, eprint = {https://ebn.bmj.com/content/4/1/14.full.pdf}, journal = {Evidence-Based Nursing} }