1. Department of Pharmacology and Therapeutics, Bayero University, Kano, Nigeria
2. Department of Pharmaceutical and Medicinal Chemistry, Ahmadu Bello University, Zaria, Nigeria
3. Department of Pharmacology and Therapeutics, Ahmadu Bello University, Zaria, Nigeria
4. Department of Pharmacology, University of Maiduguri, Nigeria
5. Department of Anesthesiology, University of Virginia, Charlottesville, VA, USA