Makerere University - Department of Anaesthesia and Critical Care, Makerere University - Department of Anaesthesia and Critical Care, Makerere University - Department of Anaesthesia and Critical Care, Mulago National Referral Hospital, Kiruddu National Referral Hospital, Entebbe Regional Referral Hospital, Mbale Regional Referral Hospital, Mengo Hospital, Rubaga Hospital, Masaka Regional Referral Hospital, Kabale Regional Referral Hospital, Lacor Hospital, Mbarara Regional Referral Hospital, Kepler University Hospital and Johannes Kepler University Linz - Department of Anaesthesiology and Intensive Care Medicine, Ministry of Health, Oman, Ministry of Health, Oman, Makerere University, Makerere University - Department of Medicine, Mbarara University of Science and Technology, Makerere University - Department of Epidemiology and Biostatistics, Makerere University - College of Health Sciences, Makerere University - School of Biomedical Sciences, University of Cambridge and Independent