RT Journal Article SR Electronic T1 Haemopoietic mechanisms in nasal polyposis and asthma JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP S24 OP S25 DO 10.1136/thorax.55.suppl_2.S24 VO 55 IS suppl 2 A1 Judah A Denburg YR 2000 UL http://thorax.bmj.com/content/55/suppl_2/S24.abstract AB