1. Department of Infectious Disease Epidemiology; Norwegian Institute of Public Health; Oslo Norway
2. Department of Biostatistics; Institute of Basic Medical Sciences; University of Oslo; Oslo Norway
3. Norwegian Field Epidemiology Training Programme (affiliated to European Programme for Intervention Epidemiology Training - ECDC); Stockholm Sweden
4. Department of International Public Health; Norwegian Institute of Public Health; Oslo Norway
5. International School of Public Health; Northern State Medical University; Arkhangelsk Russia
6. Epidemi.as; Kristiansand Norway
7. World Health Organization for West Bank and Gaza, Jerusalem, Occupied Palestinian territory