1. Department of Nursing, College of Health Science, Debre Berhan University, Debre Berhan, P.O. Box 445, Ethiopia
2. Department of Medicine, College of Medicine, Debre Berhan University, Debre Berhan, Ethiopia
3. Department of Laboratory, College of Medicine, Debre Berhan University, Debre Berhan, Ethiopia
4. Department of HIT, Debre Berhan Health Science College, Debre Berhan, P.O. Box 37, Ethiopia