1 Central London School of Anaesthesia United Kingdom, Network for Improving Critical care Systems and Training, Sri Lanka.
2 Department of surgery, Faculty of Medicine, University of Colombo, Sri Lanka.
3 Department of surgery, Faculty of Medicine, University of Colombo, Sri Lanka; and Apeksha Hospital, Sri Lanka.
4 Colombo South Teaching Hospital, Dehiwala-Mount Lavinia, Sri Lanka.
5 Network for Improving Critical care Systems and Training, Sri Lanka.
6 Mahidol Oxford Tropical Medicine Research Unit, Thailand.
7 Mahidol Oxford Tropical Medicine Research Unit Thailand, Network for Improving Critical care Systems and Training, Sri Lanka.
8 Mahidol Oxford Tropical Medicine Research Unit Thailand, Network for Improving Critical care Systems and Training, Sri Lanka; and University College London Hospitals NHS Foundation Trust, United Kingdom.