1. 1Department of Environmental Sciences, COMSATS Institute of Information Technology, Abbotabad, Pakistan
2. 2Department of Physiology, Institute of Basic Medical Sciences, Khyber Medical University, Peshawar, Pakistan, Phone: +92-342-9620074, Fax: +92-5862519
3. 3Department of Pharmacy, Kohat University of Science and Technology, Kohat, Pakistan
4. 4Department of Biochemistry, Institute of Basic Medical Sciences, Khyber Medical University, Peshawar, Pakistan