1. Department of Epidemiology and Biostatistics, Schulich School of Medicine and Dentistry Western University London Ontario Canada
2. Department of Public Health and Infectious Disease, Faculty of Medicine Herat University Herat Afghanistan
3. Department of Curative Medicine, Faculty of Medicine Jami University Herat Afghanistan
4. Department of Pediatrics, Faculty of Medicine Herat University Herat Afghanistan
5. Department of Family Medicine, Schulich School of Medicine and Dentistry Western University London Ontario Canada
6. Department of Medicine, Schulich School of Medicine and Dentistry Western University London Ontario Canada
7. Department of Clinical Medicine and Surgery University of Naples Federico II Naples Italy