||Head and Senior Consultant, Division of Surgical Oncology, National University Cancer Institute Singapore.
Adjunct Associate Professor of Surgery, Yong Loo Lin School of Medicine, National University Health System.
Department of Colorectal Surgery, Singapore General Hospital.
University Digestive Centre, Leeds General Infirmary, UK.
Fellowship in Colon and Rectal Surgery, University of Minnesota, Minnesota, USA.
Senior Consultant, National University Cancer Institute, Singapore.
Associate Professor in Surgery, Yong Loo Lin School of Medicine, National University of Singapore.
Visiting Senior Lecturer, School of Biomechanical Engineering, Nanyang Technological University.
Visiting Senior Consultant, Surgical Oncology, National Cancer Centre.
Honorary Consultant, Sultan Aminah Hospital, Johor Bahru, Malaysia.
Honorary Consultant, Hospital Selayang, Kuala Lumpur, Malaysia.
Honorary Consultant, Hospital Ipoh, Ipoh, Malaysia.
Clinical Professor, Medical College, Korea University Seoul, Korea.
Member of Editorial Board, Journal of the Korean Society of Coloproctology.