1. Gastroenterology Unit, Department of Medicine, Faculty of Medicine Universiti Kebangsaan Malaysia Kuala Lumpur Malaysia
2. GUT Research Group, Faculty of Medicine Universiti Kebangsaan Malaysia Kuala Lumpur Malaysia
3. Minimally Invasive, Upper Gastrointestinal and Bariatric Surgery Unit, Department of Surgery, Faculty of Medicine Universiti Kebangsaan Malaysia Kuala Lumpur Malaysia
4. Pantai Hospital Kuala Lumpur Malaysia
5. Department of Community Health, Faculty of Medicine Universiti Kebangsaan Malaysia Kuala Lumpur Malaysia
6. Y.S.P. Industries (M) Sdn. Bhd Kuala Lumpur Malaysia
7. School of Medical and Life Sciences Sunway University Selangor Malaysia