1. The George Institute for Global Health, University of Oxford, Oxford, UK (S.A.E.P., M.W.).
2. Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, Netherlands (S.A.E.P.).
3. Department of Epidemiology, University of Alabama at Birmingham (P.M.).
4. The George Institute for Global Health, University of New South Wales, Sydney, Australia (M.W.).
5. Department of Epidemiology, Johns Hopkins University, Baltimore, MD (M.W.).