1. World Health Organization. Global tuberculosis control 2008-2007-2005-2000. Available from: http://www.who.int/tb/publications/global_report/archive/en/index.html. Accessed March 14, 2011.
2. Italian Ministry of Health. Report on tuberculosis in Italy, 2008. Available from: http://www.salute.gov.it/imgs/C_17_pubblicazioni_1222_allegato.pdf (in Italian). Accessed March 14, 2011.
3. Prevalence and risk factors for latent tuberculosis infection among health care workers in Georgia;Mirtskhulava;Int J Tuberc Lung Dis,2008
4. Guidelines for preventing the transmission of Mycobacterium tuberculosis in health care settings, 2005;Centers for Disease Control and Prevention;MMWR Morb Mortal Wkly Rep,2005
5. Tuberculosis infection among homeless persons and caregivers in a high-tuberculosis-prevalence area in Japan: a cross-sectional study;Tabuchi;BMC Infect Dis,2011