1. Upper Gastrointestinal Surgery Unit, Department of Surgery Austin Health Heidelberg Victoria Australia
2. Austin Precinct, Department of Surgery The University of Melbourne Melbourne Victoria Australia
3. General and Gastrointestinal Surgery Research Group, The University of Melbourne Department of Surgery Austin Precinct, Austin Health Heidelberg Victoria Australia
4. Department of Surgery University Western Australia Western Australia Australia
5. Section of Bariatric Surgery The Medical City/Ateneo School of Medicine and Public Health Pasig Philippines