1. Department of Health Policy Planning and Management, Makerere University School of Public Health , New Mulago Hill Road, Mulago. P.O Box 7072, Kampala, Uganda
2. Department of Public Health, Institute of Tropical Medicine , Nationalestraat 155, Antwerp 2000, Belgium
3. Institute of Development Policy (IOB), University of Antwerp , Stadscampus building, S. Lange Sint-Annastraat 7, Antwerp 2000, Belgium