1Springett V H,Sutherland I A. re-examination of the variation in the efficacy of BCG vaccination against tuberculosis in clinical trials [J].Tubercle & Lung Disease, 1994,75:227～223.
2Medical Resear Council.BCG and Vole bacillus vaccines in the prevation of tuberculosis in adolescence and early adult life [R].Bull WHO, 1972,46:371～385.
3Ten Dam H G,Hitze K L.Does BCG vaccination protect the newborn and young infants [R]?Bull WHO, 1980,58:37～41.
4Zhang L X,Tu D H,Enarson D A.The impact of directly-observed treatment on the epidemiology of tuberculosis in Beijing [J].Int J Tuberc Lung Dis, 2000,4(10):904～910.
