1. The tuberculosis X factor;Lancet Infect Dis,2006
2. Emergence of Mycobacterium tuberculosis with extensive resistance to second-line drugs—worldwide, 2000–2004;MMWR Morb Mortal Wkly Rep,2006
3. Redefining MDR-TB transmission ‘hot spots’;Becerra;Int J Tuberc Lung Dis,2000
4. Incidence of multidrug-resistant tuberculosis in urban and rural India and implications for prevention;Almeida;Clin Infect Dis,2003
5. Notice to readers: revised definition of extensively drug-resistant tuberculosis;MMWR Morb Mortal Wkly Rep,2006