1. Department of Medical Laboratory Sciences, Bahir Dar Health Science College, Bahir Dar, Ethiopia;
2. Department of Medical Laboratory Science, School of Health Sciences, College of Medicine and Health Sciences, Bahir Dar University, Bahir Dar, Ethiopia;
3. Department of Biology, Science College, Bahir Dar University, Bahir Dar, Ethiopia;
4. Mundo Sano Foundations, Institute of Health Carlos III, Madrid, Spain