RT Journal Article SR Electronic T1 Allergen avoidance in the treatment of asthma and atopic disorders. JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 63 OP 72 DO 10.1136/thx.53.1.63 VO 53 IS 1 A1 A Custovic A1 A Simpson A1 M D Chapman A1 A Woodcock YR 1998 UL http://thorax.bmj.com/content/53/1/63.abstract AB