1. Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, Allschwil, Switzerland
2. Faculty of Natural Sciences, University of Basel, Basel, Switzerland
3. CISDOMA, The Consultative Institute for Socio-Economic Development of Rural and Mountainous Areas, Hanoi, Vietnam
4. International Center for Tropical Agriculture (CIAT), Hanoi, Vietnam
5. Eawag, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland
6. CISED, Can Tho City Institute for Socio-Economic Development Studies, Can Tho, Vietnam