1. Department of Pharmacology , School of Medicine, Jordan University of Science and Technology , P.O. Box 3030 , Irbid 22110 , Jordan , Phone: +962 2 7201000/ext. 23864, Fax: +962 2 7095123
2. Department of Anatomy and Histology , Faculty of Medicine, The University of Jordan , Amman 11942 , Jordan
3. College of Medicine , Qatar University , Doha , Qatar