RT Journal Article SR Electronic T1 Anti-IgE in Churg–Strauss syndrome JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 272 OP 272 VO 64 IS 3 A1 P Giavina-Bianchi A1 M Giavina-Bianchi A1 R C Agondi A1 J Kalil YR 2009 UL http://thorax.bmj.com/content/64/3/272.1.abstract AB