Figure 1From: HIV patients with latent tuberculosis living in a low-endemic country do not develop active disease during a 2 year follow-up; a Norwegian prospective multicenter study Study design and study groups. QFT = QuantiFERON-TB Gold. TSPOT = T-SPOT.TB. TST = Tuberculin skin test. TB = Tuberculosis. LTBI = Latent TB infectionBack to article page