1 Department of Dentistry, Kabul University of Medical Sciences, Kabul, Afghanistan.
2 Department of Microbiology, Kabul University of Medical Sciences, Kabul, Afghanistan.
3 Dow University of Health Sciences, Karachi, Pakistan.
4 Department of Medicine, Faisalabad Medical University, Faisalabad, Pakistan.
5 Medical Research Center, Kateb University, Kabul 1006, Afghanistan; Afghanistan National Charity Organization for Special Diseases, Kabul, Afghanistan. Electronic address: [email protected].