1. Department of Public Health, Goba Referral Hospital, Madda Walabu University, Bale-Goba, P.O. Box 174, Ethiopia
2. Department of Medical Laboratory Science, Goba Referral Hospital, Madda Walabu University, Bale-Goba, P.O. Box 174, Ethiopia
3. Department of Public Health, Shashemene Campus, Madda Walabu University, Shashemene, P.O.Box, Ethiopia
4. Department of Biomedical Science, Goba Referral Hospital, Madda Walabu University, Bale-Goba, P.O. Box 174, Ethiopia