1. School of Public HealthJomo Kenyatta University of Agriculture and Technology Nairobi Kenya
2. International Centre for Behavioural Studies Mombasa Kenya
3. Human Nutrition LaboratorySwiss Federal Institute of Technology Zürich Switzerland
4. Kantonsschule Wattwil Wattwil Switzerland
5. Centre for Microbiology ResearchKenya Medical Research Institute (KEMRI) Nairobi Kenya