1. UCSF Center for Tuberculosis, University of California, San Francisco, San Francisco, CA, USA, School of Nursing, University of California, San Francisco, San Francisco, CA, USA
2. UCSF Center for Tuberculosis, University of California, San Francisco, San Francisco, CA, USA, Division of Pulmonary and Critical Care Medicine, University of California, San Francisco, San Francisco, CA, USA
3. HIV Department, World Health Organization, Geneva, Switzerland