RT Journal Article SR Electronic T1 An evaluation of the use of a negative interferon-γ release assay for tuberculosis screening before TNF antagonist therapy JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 1369 OP 1372 DO 10.1183/09031936.00125714 VO 44 IS 5 A1 Georgia Woodfield A1 Benjamin Passey-Heaton A1 Anob Chakrabarti A1 Anton Pozniak A1 Michael R. Loebinger YR 2014 UL http://erj.ersjournals.com/content/44/5/1369.abstract AB