8Zhang 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.
9Zhang L X.Directly observed treatment for tuberculosis control[J].Tuberculosis,2003,801~808.
10Zhang L X,Kan G Q.Tuberculosis control program in Beijing [J].Tubercle Lung Disease,1992,73:162~166.