1. Department of Biomedical Science and Technology, Maseno University, P.O. Box 333-40105, Maseno, Kenya
2. Department of Medical Laboratory, Moi Teaching and Referral Hospital, P.O. Box 3-30100, Eldoret, Kenya
3. Department of Human Pathology, School of Medicine, Moi University, P.O. Box 4606-30100, Eldoret, Kenya