1. Occupational Therapy Programme, Centre for Rehabilitation and Special Needs Studies, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
2. Faculty of Medicine, Universiti Kebangsaan Malaysia & Hospital Pakar Kanak-kanak, Kuala Lumpur, Malaysia
3. Speech Sciences Programme, Centre for Rehabilitation and Special Needs Studies, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
4. Department of Psychology, International Islamic University Malaysia, Kuala Lumpur, Malaysia