1. Department of Otorhinolaryngology, University of Ilorin Teaching Hospital, Ilorin, Nigeria
2. Division of Thoracic & Cardiovascular Surgery, Department of Surgery, University of Ilorin, Ilorin, Nigeria
3. Department of Anaesthesia, University of Ilorin, Ilorin, Nigeria
4. ENT Department, College of Medicine and Health Science, Afe-Babalola University, Ado-Ekiti, Ekiti State, Nigeria