1. World Health Organization: Global Tuberculosis control report 2012. Geneva, Switzerland: WHO; 2013. p. 9–26.
2. World Health Organization. The global plan to stop TB 2011–2015: transforming the fight towards elimination of tuberculosis. Geneva, Switzerland: WHO; 2010. p. 10–5.
3. Federal Democratic Republic of Ethiopian Ministry of health: Health and Health related inidicators: Addis Ababa, Ethiopia, 2011/12. P.33-36.
4. Federal Ministry of Health Ethiopia. Guidelines for clinical and programmatic management of TB, leprosy and TB/HIV in Ethiopia, 5th edition, Addis Ababa, Ethiopia, March 2013. P. 1–25.
5. World Health Organization. Treatment of tuberculosis: guidelines for national programmes. Geneva, Switzerland: WHO; 2003. p. 33–103.