1. Frieden TR, Sterling TR, Munsiff SS, Watt CJ, Dye C: Tuberculous. Lancet. 2003, 362 (9387): 887-899. 10.1016/S0140-6736(03)14333-4.
2. WHO | Tuberculous: WHO, cited 2012 Jun 8. Available from:[ http://www.who.int/mediacentre/factsheets/fs104/en/ ],
3. Ministry of Health, Ethiopia: Available from:[ http://www.tbcta.org/Uploaded_files/Zelf/MinistryofHealthEthiopia1280040820.pdf ],
4. WHO: WHO | Global tuberculous control - epidemiology, strategy,financing. cited 2012 Jun 8. Available from:[ http://www.who.int/tb/publications/global_report/2009/en/index.html ],
5. WHO: Global tuberculous report. 2012, Geneva