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Dr. Aung Myint Oo @ Ye Jian Guo is a Senior Consultant Surgeon in the Department of General Surgery and a Deputy Chief Medical Informatics Officer in Tan Tock Seng Hospital, Singapore.

He is also a clinical senior lecturer at the Yong Loo Lin School of Medicine, National University of Singapore, and an adjunct senior lecturer / clinical module lead (gastrointestinal system) with Lee Kong Chian School of Medicine, Nanyang Technological University of Singapore.

Dr. Aung completed his basic and advanced surgical training in Singapore.  He was awarded Health Manpower Development Plan (HMDP) scholarship to undergo his fellowship training in advance minimally invasive upper gastrointestinal surgery at Seoul National University Bundang Hospital, Korea. He is a member of international societies for endo-laparoscopic surgeons and bariatric surgeons. He is currently the executive board member, and was the immediate past scientific chairman of the Obesity and Metabolic Surgery Society of Singapore (OMSSS), Chairman of Chapter of General Surgeons, College of Surgeons, Academy of Medicine Singapore, as well as member of the Communication Committee of International Federation for the Surgery of Obesity and Metabolic Disorders (IFSO). He also sits on the executive committee of SingSPEN (Society of Parenteral and Enteral Nutrition, Singapore) and is also a member of the Singapore Cancer Society Gastric Cancer Awareness Month Committee.  He is actively involved in the Digital Transformation Project of ELSA (Endoscopic and Laparoscopic Surgeons of Asia) and is also the Co-Chair of ELSA's Communication & Informatics Committee.

Dr. Aung is active in both clinical research and teaching. He was awarded the Ministry of Health Healthcare Research Scholarship in 2013 to pursue Master of Clinical Investigation (MCI) at National University of Singapore and he was conferred MCI in 2016.  He is also a Co-Investigator of international gastric cancer research trials.  Not only has he published his research works in peer reviewed medical journals, he is also a reviewer of peer-reviewed medical journals.  He is currently an instructor of Advanced Cardiac Life Support (ACLS) and Advanced Trauma Life Support (ATLS) courses, as well as a core faculty/ faculty of the Surgical Residency programmes in Singapore.  He is also an e-tutor of MSc in Surgical Science, Edinburgh Surgical Science Qualifications, UK and a Visiting Lecturer to the Department of Thoracic Surgery, University of Medicine 1, Yangon in Myanmar, as well as a member of the Surgical Specialty Board in General Surgery with the Royal College of Surgeons of Edinburgh.