1. 1Department of Respiratory Therapy, School of Biomedical and Allied Health Sciences, College of Health Sciences, University of Ghana, Accra, Ghana
2. Department of Respiratory Therapy, School of Biomedical and Allied Health Sciences, College of Health Sciences, University of Ghana, Accra, Ghana
3. Department of Anaesthesia, University of Ghana Medical School, College of Health Sciences, University of Ghana, Accra, Ghana