1 University of North Carolina Institute of Global Health and Infectious Diseases, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27514, USA; Faculty of Infectious Diseases and Tropical Medicine, London School of Hygiene and Tropical Medicine, London, UK; Social Entrepreneurship to Spur Health Team, Guangzhou, China. Electronic address: jdtucker@med.unc.edu.
2 Behavioral Science and Health Education, St Louis University College for Public Health and Social Justice, St Louis, MO, USA.
3 Division of Clinical Science, Nigerian Institute of Medical Research, Yaba Lagos state, Nigeria.