1. Department of Microbiology and Parasitology
2. Department of Internal Medicine, College of Medicine and Health Sciences, University of Gondar, Gondar
3. Department of Surgery, Facility of Medicine, Addis Ababa University, Addis Ababa
4. Department of Dermatology
5. Department of Pediatrics and Child Health, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia
6. Hokkaido University of Education, Division of Medicine and Nursing, Sapporo
7. Department of Disease Control and Molecular Epidemiology, Health Sciences University of Hokkaido, Ishikari-Tobetsu, Hokkaido, Japan