1. Treatment and Care Unit, Department of HIV/AIDS, World Health Organization, Avenue Appia 20, 1211 Geneva, Switzerland
2. Ministry of Public Health and Sanitation, Government of Kenya, Nairobi, Kenya
3. Vestergaard Frandsen (EA) Ltd., Waiyaki Way, ABC Place, P.O. Box 66889, Nairobi 00800, Kenya
4. Innovation Centre, Vestergaard Frandsen, Chemin de Messidor 5-7, 1006 Lausanne, Switzerland
5. South African Centre for Epidemiological Modeling and Analysis, Stellenbosch, South Africa