RT Journal Article SR Electronic T1 Asthma publications. JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 215 OP 216 DO 10.1136/thx.50.2.215-b VO 50 IS 2 A1 Stanford, C F YR 1995 UL http://thorax.bmj.com/content/50/2/215.3.abstract AB