1. Achutha Menon Centre for Health Science Studies, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, India
2. Department of Neurology, Christian Medical College, Ludhiana, Punjab, India
3. Department of Neurology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, India
4. Department of Neurology, Amrita Institute of Medical Sciences, Kochi, Kerala, India
5. Department of Neurology, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India
6. Non-Communicable Diseases Section, Indian Council of Medical Research, New Delhi, India
7. Department of Medicine, University of Alberta, Edmonton, Canada