1. Clinton Health Access Initiative Inc., Yaounde, Cameroon
2. Institute for Global Health, University of Siena, Siena, Italy
3. Clinical Trial Service Unit and Epidemiological Studies Unit (CTSU), Nuffield Department of Population Health, University of Oxford, Oxford, England, UK
4. Ministry of Public Health, Yaounde, Cameroon
5. Global Essential Medicines, Clinton Health Access Initiative Inc., Boston, Massachusetts, USA
6. Hôpital Régional De Garoua, BP 121 Garoua, Cameroon