Kaleab Taye Haile2, College of Medicine and Health Science, University of Gondar, Department of Pharmaceutics and Social Pharmacy, P.O.Box: 196, Chechela street, Lideta sub-city Kebele 16, Gondar, Ethiopia. Email address: teezysam@gmail.com
Yared Belete Belay3 , College of Health Science, School of Pharmacy, Department of Pharmaceutics and Social Pharmacy, Mekele University, Mekele, Ethiopia. Email address: yaredbelete@mu.edu