1. Brigham and Women’s Hospital , Boston, MA 02115 , USA
2. Harvard Humanitarian Initiative , Cambridge, MA 02138 , USA
3. Department of Medicine, Harvard Medical School , Boston, MA 02115 , USA
4. Department of Health Services Research and Policy, London School of Hygiene and Tropical Medicine , London, WC1H 9SH , UK
5. Santé Diabète , Bamako, BP 2736 , Mali
6. Department of Medicine, Emory University School of Medicine , Atlanta, GA, 30322, USA
7. Emory Rollins School of Public Health , Atlanta, GA, 30322 , USA
8. Médecins Sans Frontières , London, EC4A 1AB , UK