1. TBFACTS.ORG,
https://www.tbfacts.org/tb-statistics/
2. World Health Organisation,
http://www.who.int/mediacentre/factsheets/fs104/en/
3. TBFACTS.ORG,
https://www.tbfacts.org/tb-treatment/
4. World Health Organisation,
http://www.who.int/mediacentre/factsheets/fs360/en/
5. De Cock, M. Kevin, R.E. Chaisson, Int. J. Tuberculosis Lung Disease 3, 457 (1999)