Teaching Consultant, Division of English Language Education,
Faculty of Education, University of Hong Kong.
Retired Senior Specialist/Section Head (1996-2006), Audiological Services & Deaf Education Section, Education Bureau, HKSAR Government.
Specialist in Paediatrics and Head, Child Development and Assessment Centre,
St. Paul's Hospital;
Honorary Consultant, Hong Kong Parent Association for the Hearing Impaired;
Former Acting Senior Medical Officer and Head, Hearing Impairment Subspecialty Team,
Child Assessment Service, Department of Health, HKSAR Government.
Vice President, Hong Kong Society of Child Neurology & Developmental Paediatrics;
Consultant Paediatrician and Head, Child Assessment Service, Department of Health, HKSAR Government.
Associate Professor and Chief, Division of Speech Therapy,
Department of Otorhinolaryngology, Head and Neck Surgery,
The Chinese University of Hong Kong;
Assistant Director, The Institute of Human Communicative Research,
The Chinese University of Hong Kong.
Teaching Consultant, Division of English Language Education,
Faculty of Education, University of Hong Kong.
Assistant Professor and Associate Head, Department of Special Education and Counselling,
The Hong Kong Institute of Education.