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Matulis, G; Jüni, P; Villiger, P M; Gadola, S D (2008). Detection of latent tuberculosis in immunosuppressed patients with autoimmune diseases: performance of a Mycobacterium tuberculosis antigen-specific interferon gamma assay. Annals of the rheumatic diseases, 67(1), pp. 84-90. London: BMJ Publishing Group 10.1136/ard.2007.070789
