1. Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, P.O. Box 13145-784, Tehran, Iran.
2. Department of Pharmacology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.
3. Anatomy and Histology Department, School of Medicine, Iran University of Medical Sciences, Tehran, Iran.
4. Basic Sciences Research Centre, Imam Khomeini Hospital, Tehran University of Medical Sciences, Tehran, Iran.
5. Department of Pharmacology and Toxicology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.