TY  - RPRT
TI  - Defining and investigating difficult asthma: developing quality indicators.
AU  - C O Prys-Picard
AU  - S M Campbell
AU  - J G Ayres
AU  - J F Miles
AU  - R M Niven
AU  - Consensus on Difficult Asthma Consortium UK (CODAC-UK)
PY  - 2005
DO  - 10.1016/j.rmed.2005.10.013
UR  - https://pubmed.ncbi.nlm.nih.gov/16303294/
ID  - 16303294
ER  -