1. Department of Environmental Health; Rollins School of Public Health; Emory University; Atlanta GA USA
2. London School of Hygiene and Tropical Medicine; London UK
3. School of Social and Community Medicine; University of Bristol; Bristol UK
4. Centre for Reviews and Dissemination; University of York; York UK
5. Department of Public Health and Environment; World Health Organization; Geneva Switzerland
6. Swiss Tropical and Public Health Institute; Basel Switzerland
7. University of Basel; Basel Switzerland
8. Norwich Medical School; University of East Anglia; Norwich UK
9. Department of Environmental Health; Tshware University of Technology; Pretoria South Africa
10. Centre for Research into Environment and Health; Aberystwyth University; Aberystwyth UK