1. Streptomycin resistance in pulmonary tuberculosis;Crofton;British Medical Journal,1948
2. Various combinations of isoniazid with streptomycin or with PAS in the treatment of pulmonary tuberculosis. Seventh report to the Medical Research Council by their Tuberculosis Chemotherapy Trials Committee;Medical Research Council;British Medical Journal,1955
3. http://www.who.int/tb/dots/en/
4. Assessment of worldwide tuberculosis control. WHO Global Surveillance and Monitoring Project;Raviglione;Lancet,1997
5. World Health Organization 2006 Global Tuberculosis Control - Surveillance, Planning, Financing WHO Report 2006 World Health Organization Geneva http://www.who.int/tb/publications/global_report/2006/summary/en/index.html