P21 Success rate of sputum induction in the Leicester paediatric severe asthma clinic using
R Herzallah, KS Staley, M Mc Feeters, C Brightling, P Bradding, D Parker, H Pandya, E Humphreys, EA Gaillard
Thorax Dec 2010, 65 (Suppl 4) A85; DOI: 10.1136/thx.2010.150961.21