1. Department of Neurology, Room 627 Pathology Building, Johns Hopkins Hospital, The Johns Hopkins University, 600 North Wolfe Street, Baltimore, MD 21287, United States of America (USA).
2. Division of Biostatistics, University of California, Berkeley, USA.
3. United Nations High Commissioner for Refugees, Amman, Jordan. .
4. United Nations High Commissioner for Refugees, Beirut, Lebanon.
5. Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, USA.