Anne Cockcroft1, Mokgweetsi Masisi2, Lehana Thabane3, Neil Andersson4. 1. CIET Trust Botswana, Gaborone, Botswana. acockcroft@ciet.org. 2. Minister of Presidential Affairs and Public Administration, Government of Botswana, Gaborone, Botswana. 3. Epidemiology and Biostatistics, McMaster University, Hamilton, Canada. 4. Family Medicine, McGill University, Montreal, Canada. Center for Investigation of Tropical Diseases (CIET), Universided Autónoma de Guerrero, Acapulco, Mexico.