RT Journal Article SR Electronic T1 Hypersensitivity to pyrazolones JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP S72 OP S74 DO 10.1136/thorax.55.suppl_2.S72 VO 55 IS suppl 2 A1 Micha Levy YR 2000 UL http://thorax.bmj.com/content/55/suppl_2/S72.abstract AB