RT Journal Article SR Electronic T1 The specificity of interferon-γ-based blood tests in the identification of latent tuberculosis infection JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 1283 OP 1283 DO 10.1183/09031936.00107506 VO 28 IS 6 A1 C. Granger YR 2006 UL http://erj.ersjournals.com/content/28/6/1283.abstract AB