1. School of Pharmacy, College of Health Sciences, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia
2. Drug Information Centre, School of Pharmacy/Tikur Anbessa Specialized Hospital (TASH), College of Health Sciences, Addis Ababa University, P.O. Box 9086, Addis Ababa, Ethiopia
3. Department of Pharmacy, College of Health Sciences, Mekelle University, P.O. Box 1871, Mekelle, Ethiopia
4. School of Pharmacy, College of Medicine and Health Sciences, Gondar University, P.O. Box 196, Gondar, Ethiopia
5. Department of Pharmacy, College of Medical and Health Sciences, Jimma University, P.O. Box 378, Jimma, Ethiopia