1. 1. TB India, RNTCP Status Report 2006; http://www.tbcindia.org
2. 2. WHO 1997.Report on tuberculosis epidemic, 1997, Geneva WHO: 1997
3. 3. Laennec RT. Treatise on the diagnosis and treatment of diseases of the chest. New York.
4. 4. Kidd P. Basic tuberculosis phthisis. Lancet 1886; 616
5. 5. Fowler JK. The localization of lesions of phthisis. London and A Churchill; 1888.