Department of Microbiology and Parasitology;
Gondar College of Medicine and Health Sciences;
University of Gondar;
Ethiopia;
Department of Preventive Environment and Nutrition;
Institute of Health Biosciences;
The University of Tokushima;
Japan;
Department of Internal Medicine;
Faculty of Medicine;
Addis Ababa University;
Ethiopia;
Department of Biochemistry;
Gondar College of Medicine and Health Sciences;
University of Gondar;
Ethiopia;
Department of Biology;
Faculty of Applied Science.University of Gondar.Ethiopia;
Hokkaido University of Education;
Sapporo Campus;
Division of Medicine and Nursing;
Japan;