Negative effect of smoking on the performance of the QuantiFERON TB gold in tube test. - Aabye, Martine G.; Hermansen, Thomas Stig; Ruhwald, Morten; PrayGod, George; Faurholt-Jepsen, Daniel; Jeremiah, Kidola; Faurholt-Jepsen, Maria; Range, Nyagosya; Friis, Henrik; Changalucha, John; Andersen, Aase B.; Ravn, Pernille (BMC Infectious Diseases, 2012)