1. Duke Global Health Institute, Duke University, Durham, North Carolina
2. Department of Psychology and Neuroscience, Duke University, Durham, North Carolina
3. Behavioral Medicine Service, Department of Psychiatry, Massachusetts General Hospital, Boston, Massachusetts
4. Department of Nutrition, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, North Carolina
5. Department of Psychiatry, Stellenbosch University, Cape Town, South Africa