1. 1Medical Faculty, Herat University, Herat, Afghanistan;
2. 2Medical Research Center, Kateb University, Kabul, Afghanistan;
3. 3Medical Faculty, Ghalib University, Herat, Afghanistan;
4. 4Afghanistan National Charity Organization for Special Diseases (ANCOSD), Kabul, Afghanistan;
5. 5Department of Global Health and Development, London School of Hygiene and Tropical Medicine, London, United Kingdom