1. Immunology and Molecular Biology, Medical Laboratory Sciences, College of Health Sciences Debre Markos University Debre Markos Ethiopia
2. Immunology and Molecular Biology, Medical Laboratory Sciences, College of Health Sciences Debre Tabor University Debre Tabor Ethiopia
3. Immunology and Molecular Biology, Medical Laboratory Sciences, College of Health Sciences Wollo University Dessie Ethiopia
4. Hematology and Immunohematology, Medical Laboratory Sciences, College of Health Sciences Debre Markos University Debre Markos Ethiopia