1. Tropical Health Unit, Academic Unit of Public Health Medicine, 20 Hyde Terrace, Leeds LS2 9LN
2. PO Box 206, Gweru, Zimbabwe
3. Am Weinberg 4, 2863 Ritterhude, Germany
4. Mutare City Council, PO Box, Zimbabwe
5. Child Health Institute, University of Cape Town, 46 Sawkins Road, Rondebosch, Cape Town, South Africa