1. Department of Rehabilitation Medicine, Faculty of Medicine, University Malaya, Kuala Lumpur, Malaysia
2. Allied Health Sciences College, Sungai Buluh, Ministry of Health, Kuala Lumpur, Malaysia
3. Department of Social Preventive Medicine, Faculty of Medicine, University Malaya, Kuala Lumpur, Malaysia
4. Institute of Educational Leadership, Faculty of Education, University of Malaya, Kuala Lumpur, Malaysia