1. Climate Studies, Modelling and Environmental Health Research Group; Council for Scientific and Industrial Research; Pretoria South Africa
2. Department of Geography, Geoinformatics and Meteorology; University of Pretoria; Pretoria South Africa
3. Cancer Society of New Zealand Social and Behavioural Research Unit; Department of Preventive and Social Medicine; Dunedin School of Medicine; University of Otago; Dunedin New Zealand
4. Department of Preventive and Social Medicine; University of Otago; Dunedin New Zealand
5. Public Health South; Southern District Health Board; Dunedin New Zealand