1. Syria Research Group (SyRG), The London School of Hygiene & Tropical Medicine, National University of Singapore Saw Swee Hock School of Public Health
2. Department of Global Health & Development, London School of Hygiene & Tropical Medicine, London, UK
3. Free Aleppo University, Aleppo, Syria
4. Saw Swee Hock School of Public Health, National University of Singapore and National University Health System, Singapore