1. Department of Clinical Pharmacology and Therapeutic Medicine, IPGMER and SSKM Hospital, Kolkata, India
2. Department of Neuroscience, S.N.Pradhan Centre for Neuroscience, Kolkata, India
3. Department of Interventional Neurology, Bellevue Clinic, Kolkata, India
4. Department of Critical Care Medicine, Bellevue clinic, Kolkata, India
5. Department of Cognitive Neurology, Baycrest Health Sciences and Rotman Research Institute, University of Toronto, Canada, India
6. Department of Neurology, University Hospital “12 de Octubre”, Madrid, Spain
7. Centro de Investigación Biomédica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
8. Department of Medicine, Complutense University, Madrid, Spain