||Member, Committee of Inquiry into the Radiation Accident at Orthopaedic Dept, SGH on 28.2.80.
Vice Chairman, MOH Radiation Protection Committee since 1989.
Chairman, SNB Education & Examination Sub-Committee for Post-Basic Oncology Nursing Course since 1989.
Advisor, 4th Advanced Head & Neck Surgery Course 1991.
Member of the Management Committee, School of Radiography, SGH since 1989.
Member of National Cancer Education Programme Medical Advisory Committee 1990.
Part-Time Lecturer, Faculty of Medicine.National University of Singapore since 1975.
Lecturer, Singapore School of Nursing since 1981.
Lecturer, School of Radiography since 1976.
Alternate Chairman Lymphoma Work Group.
Head, SSDL since 1989.
Honorary Specialist on Medical Panel of St.Andrew's Community Hospital from 1992.
Member of Advisory Committee for Radiography Nanyang Polytechnic from September 1992.
Member ,Committee of Inquiry - Administration of Cytotoxics (Feb 1993).
Member of Scientific Committee of ICR'1994, Singapore (23 January to 28 January 1994)
Scientific Committee Advisor of the 5th Advanced Head and Neck Cancer (1 - 3 November 1994)
Member of Scientific Committee of 12th Asian Pacific Cancer Conference, Singapore (17-20 October 1995)
Member of Therapeutic Radiology Speciality Board, Academy of Medicine (to December 1995)
Member of Singapore Gammaknife Centre - Accreditation Committee
Guest Editor for the issue (May 1996) on “Radiation Oncology”, Annals, Academy Of Medicine
Panel of Judges for Poster Viewing and Juding (Ambulatory Session) at the 8th ASM
Member, National Committee on Cancer Care for 2 years (Jan 1998 – Jan 2000)