1World Health Organization. WHO/IUATLD global working group on anti-tuberculosis drug resistance surveillance. Guidelines for surveillance of drug resistance in tuberculosis. Geneva: WHO, 1997:216.
7World Health Organization/Intenational Union Against Tuberculosis and Lung Diseases.Guidelines for surveilance of drug resistance in tuberculosis[M].Geneva:WHO,1997:2-12
8Chaulet p,Boulahbal F,Grosset J.Surveillance of drug resistance for tuberculosis control:Why and how?[J].Fubercle Lung Dis,1995,76:487-492