1. Department of Epidemiology, University of Alabama at Birmingham, Birmingham, AL
2. Department of Epidemiology, Tulane University, New Orleans, LA
3. The George Institute for Global Health, University of New South Wales, Sydney, Australia
4. The George Institute for Global Health, University of Oxford, Oxford, U.K.
5. Department of Epidemiology, Johns Hopkins University, Baltimore, MD
6. Department of Medicine, University of Virginia, Charlottesville, VA