1. Faculty of Medicine and Health Sciences, Universiti Malaysia Sabah, Kota Kinabalu, Malaysia
2. Department of Anaesthesiology and Intensive Care, Hospital Sultanah Aminah, Johor Bahru, Malaysia
3. Department of Anaesthesiology and Intensive Care, Hospital Queen Elizabeth, Kota Kinabalu, Malaysia
4. Department of Anaesthesiology and Intensive Care, Jesselton Medical Center, Kota Kinabalu, Malaysia
5. Department of Accident and Emergency Medicine, Hospital Wanita & Kanak-Kanak, Kota Kinabalu, Malaysia