National and International Appointments#
- (2018 – Present) Adjunct Professor, The National University of Malaysia, Malaysia
- (2012 – Present) Visiting Professor, Shanghai Medical College, Fudan University, China
- (2010 – Present) Senior Clinical Fellow, University of Melbourne, Australia
- (2010 – 2014) Honorary Gastroenterologist, St Vincent's Hospital, University of Melbourne, Australia
- (2009 – 2010) Locum Consultant Gastroenterologist, Chelsea and Westminster Hospital, London, UK
- (2003 – 2009) Specialist Registrar, North West London Hospitals (St Mary’s Hospital, St Mark’s Hospital, Northwick Park Hospital, Hillingdon Hospital), UK
- (2001 – 2003) Senior House Officer, King College Hospital & The Whittington & Middlesex Hospitals, UK
- (2000 – 2001) House Officer, St Bartholomew Hospital London, UK
Professional Societies#
- (Since 2024) President, The Hong Kong Society of Gastroenterology
- (Since 2024) Advisory Board Member, Asian Organization of Crohn's and Colitis (AOCC)
- (Present) Associate Editor, Gut
- (Present) Advisory Board, Cell Host & Microbe
- (Present) Board Member, Cell Genomics
- (Since 2017) Steering Committee, World Gastroenterology Organization (WGO)
- (Since 2011) Management Committee, International IBD Genetics Consortium
