1. Department of Public Health University of Copenhagen Copenhagen Denmark
2. Copenhagen Centre for Disaster Research Copenhagen Denmark
3. Division of Ambulatory Health Services Philadelphia Department of Public Health Philadelphia PA USA
4. Centro de Desarrollo Agroempresarial y Turístico del Huila Servicio Nacional de Aprendizaje Huila Colombia
5. Environmental Health Group Faculty of Infectious Tropical Diseases London School of Hygiene & Tropical Medicine London UK
6. Centre for Communicable Diseases International Centre for Diarrhoeal Disease Research Dhaka Bangladesh