1. World Health Organization, Geneva, Global Tuberculosis Report, 2013; Available: http://apps.who.int/iris/bitstream/10665/91355/1/9789241564656_eng.pdf
2. World Health Organization, Geneva, Automated Real-time Nucleic Acid Amplification Technology for Rapid and Simultaneous Detection of Tuberculosis and Rifampicin Resistance: Xpert MTB/RIF System Policy Statement. 2011; WHO/HTM/TB/2011.4. Available: http://apps.who.int/iris/bitstream/10665/44586/1/9789241501545_eng.pdf?ua=1
3. Xpert MTB/RIF Assay for pulmonary tuberculosis and Rifampicin resistance in adults;R Steingart;Chochrane Database Syst Rev,2013
4. World health Organization Policy update, Automated Real-time Nucleic Acid Amplification Technology for Rapid and Simultaneous Detection of Tuberculosis and Rifampicin Resistance: Xpert MTB/RIF assay for the diagnosis of pulmonary and extra-pulmonary TB in adults and children. Policy Update 2013; WHO/HTM/TB/2013.16. Available: http://apps.who.int/iris/bitstream/10665/112472/1/9789241506335_eng.pdf?ua=1
5. World Health Organization, Geneva, Rapid Implementation of the Xpert MTB/RIF diagnostic test. Technical and Operational ‘How-to’ Practical Considerations. 2011; WHO/HTM/TB/2011.2. Available: http://whqlibdoc.who.int/publications/2011/9789241501569_eng.pdf