1. Division of Pulmonary, Allergy, and Critical Care Medicine, Columbia University Medical Center, New York City, USA; Department of Epidemiology, Mailman School of Public Health, Columbia University Medical Center, New York City, New York, USA; CAPRISA MRC-HIV-TB Pathogenesis and Treatment Research Unit, Durban, South Africa
2. CAPRISA MRC-HIV-TB Pathogenesis and Treatment Research Unit, Durban, South Africa
3. Division of Pulmonary and Critical Care Medicine, University of California, San Francisco, California, USA