TY  - RPRT
TI  - Peak flow-based compared to symptom-based written action plans.
AU  - National Education and Prevention and Prevention Program
PY  - 2002
DO  - 10.1016/s0091-6749(02)80010-0
UR  - https://pubmed.ncbi.nlm.nih.gov/12518561/
ID  - 12518561
ER  -