1. R. Gupta, M. A. Espinal, and M. C. Raviglione are with the Stop TB Department, Communicable Diseases, World Health Organization (WHO), 20 Avenue Appia, Geneva, Switzerland.
2. R. Gupta, J. Y. Kim, and P. E. Farmer are in the Program in Infectious Diseases and Social Change, Harvard Medical School, Boston, MA 02115, USA.
3. J.-M. Caudron is with Médecins Sans Frontières (MSF), Artsen Zonder Grenzen-Rue Dupréstraat, 94 1090 Brussels, Belgium.
4. B. Pecoul is with Access to Essential Medicines, MSF, Case Postale 6090, CH1211 Geneva 6, Switzerland.