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. Biomedical Sciences; University of Edinburgh Medical School; Edinburgh UK
4. Vision Center; Akron Children's Hospital; Akron OH
5. Department of Surgery; College of Medicine; Northeast Ohio Medical College; Rootstown OH