1. Department of Biochemistry, Jomo Kenyatta University of Agriculture and Technology, Nairobi, P.O. Box 62000-00200, Kenya
2. Department of Animal Sciences, Jomo Kenyatta University of Agriculture and Technology, Nairobi, P.O. Box 62000-00200, Kenya
3. Department of Animal Science, Institute of Primate Research, P.O. Box 24481 Karen 00502 Nairobi, Kenya
4. Department of Clinical Studies, University of Nairobi, Nairobi, P.O. Box 30197-GPO, Kenya