1. Department of Microbiology and Parasitology
2. Department of Preventive Environment and Nutrition, Institute of Health Biosciences, The University of Tokushima, 770-8503
Tokushima, Japan
3. Internal Medicine;
4. Community Health
5. Radiology;
6. Pathology and
7. Physiology, University of Gondar, PO Box 196, Gondar;
8. Armauer Hansen Research Institute, PO Box 1005, Addis Ababa, Ethiopia;