Behnaz, F., M. Mohammadzadeh, and G. Mohammadzade. “Tuberculin Skin Tests Among Medical Students at Risk for Nosocomial Transmission of Mycobacterium Tuberculosis in Yazd, Iran”. International Journal of Infection Control, vol. 9, no. 4, Oct. 2013, doi:10.3396/ijic.v9i4.11794.