RT Journal Article SR Electronic T1 Comparison of T-Spot.TB and tuberculin skin test among silicotic patients JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society DO 10.1183/09031936.00054707 A1 Leung, C.C. A1 Yam, W.C. A1 Yew, W.W. A1 Ho, P.L. A1 Tam, C.M. A1 Law, W.S. A1 Wong, M.Y. A1 Leung, M. A1 Tsui, D. YR 2007 UL http://erj.ersjournals.com/content/early/2007/10/24/09031936.00054707.abstract AB