Department of Clinical Pharmacology and Therapeutics, Federal University Dutse, Dutse, Jigawa State, Nigeria, [email protected], [email protected]

Department of Anaesthesiaßederal Medical Centre, akurdi, Benue State, Nigeria

Department of Anaesthesia, Aminu Kano Teaching Hospital, Kano, Nigeria

Department of Anaesthesia, Irrua Specialist Teaching Hospital, Irrua, Edo State, Nigeria