1. Discipline of Occupational and Environmental Health, University of KwaZulu-Natal, Durban, South Africa
2. Environment and Health Research Unit, South African Medical Research Council, Pretoria, South Africa
3. Department of Geography, Geoinformatics and Meteorology, University of Pretoria, Pretoria, South Africa
4. Smart Places Cluster, Council for Scientific and Industrial Research, Pretoria, South Africa
5. Department of Forestry, Fisheries and the Environment, Pretoria, South Africa