title: Latent tuberculosis (TB) bacilli: Yes or no to preventive chemotherapy.
authors.affiliation: Mycobacteriology Research Centre, National Research Institute of Tuberculosis and Lung Disease (NRITLD), WHO & UNION Collaborating Centre for TB & Lung Diseases, Shahid Beheshti University (Medical Campus), P.O. 19575/154, Darabad, Tehran 19556, Iran.
authors.forename: Ali Akbar
authors.initials: AA
authors.lastname: Velayati
authors.affiliation: Mycobacteriology Research Centre, National Research Institute of Tuberculosis and Lung Disease (NRITLD), WHO & UNION Collaborating Centre for TB & Lung Diseases, Shahid Beheshti University (Medical Campus), P.O. 19575/154, Darabad, Tehran 19556, Iran; The Republican Research and Practical Centre for Epidemiology and Microbiology, Filimonova 23, Minsk, Belarus. Electronic address: pfarnia@hotmail.com.
authors.forename: Parissa
authors.initials: P
authors.lastname: Farnia
authors.affiliation: Chronic Respiratory Diseases Research Center, National Research Institute of Tuberculosis & Lung Disease (NRITLD), Shahid Beheshti University of Medical Sciences,Tehran, Iran.
authors.forename: Mohammad Reza
authors.initials: MR
authors.lastname: Masjedi