1. Neurology Unit, Medical Department Hospital Sungai Buloh, Ministry of Health Sungai Buloh Malaysia
2. Neurology Unit, Medical Department Hospital Tengku Ampuan Rahimah Klang, Ministry of Health Sungai Buloh Malaysia
3. Department of Genetics Hospital Kuala Lumpur, Ministry of Health Kuala Lumpur Malaysia
4. Paediatric Neurology Department Hospital Tunku Azizah Kuala Lumpur, Ministry of Health Kuala Lumpur Malaysia
5. Department of Internal Medicine Royal Victoria Hospital, Belfast Health & Social Care Trust Northern Ireland UK
6. Neurology Department Hospital Kuala Lumpur, Ministry of Health Kuala Lumpur Malaysia