The global burden of tuberculosis--combating drug resistance in difficult times.
Donald
Peter R
PR
Department of Paediatrics and Child Health, Faculty of Health Sciences, University of Stellenbosch, Stellenbosch, South Africa.
van Helden
Paul D
PD
D054908:Extensively Drug-Resistant Tuberculosis / Q000517:prevention & control; D014943:Global Health; D006285:Health Planning; D006801:Humans; D015995:Prevalence; D018088:Tuberculosis, Multidrug-Resistant / Q000453:epidemiology / Q000517:prevention & control*