1. Department of Nutritional Sciences, School of Public HealthUniversity of Michigan Ann Arbor Michigan USA
2. Nutrition and Food Science DepartmentUniversity of Ghana Accra Ghana
3. Regional Institute for Population StudiesUniversity of Ghana Accra Ghana
4. Livestock and Poultry Research CenterUniversity of Ghana Accra Ghana
5. Department of Epidemiology, School of Public HealthUniversity of Michigan Ann Arbor Michigan USA