1. World Health Organization (WHO): The top 10 causes of death. 2017
http://www.who.int/mediacentre/factsheets/fs310/en/
. 29 May 2017.
2. World Health Organization (WHO): Leading causes of death by economy income group. 2017
https://www.who.int/news-room/fact-sheets/detail/the-top-10-causes-of-death
.
3. World Health Organization (WHO): Tuberculosis. 2017
http://www.who.int/mediacentre/factsheets/fs104/en/
. 29 May 2017.
4. Centers for Disease Control and Prevention (CDC). Emergence of Mycobacterium tuberculosis with extensive resistance to second-line drugs--worldwide, 2000-2004. MMWR Morb Mortal Wkly Rep. 2006;55(11):301–5.
5. Manjelievskaia J, Erck D, Piracha S, Schrager L. Drug-resistant TB: deadly, costly and in need of a vaccine. Trans R Soc Trop Med Hyg. 2016;110(3):186–91.