1 Department of Pediatrics, Faculty of Medicine, Kandahar University, Beside Aino Mena Town, District 10, Durahi, Kandahar, Afghanistan. drbilal77@yahoo.com.
2 Head of Research Unit, Faculty of Medicine, Kandahar University, Kandahar, Afghanistan. drbilal77@yahoo.com.
3 Department of Pediatrics, Faculty of Medicine, Kandahar University, Beside Aino Mena Town, District 10, Durahi, Kandahar, Afghanistan.
4 Department of Psychiatry, Faculty of Medicine, Kandahar University, Kandahar, Afghanistan.
5 Department of Internal Medicine, Faculty of Medicine, Kandahar University, Kandahar, Afghanistan.
6 Department of Public Health, Faculty of Medicine, Kandahar University, Kandahar, Afghanistan.
7 Mahidol Oxford Tropical Medicine Clinical Research Unit (MORU), Mahidol University, Bangkok, Thailand.