Department of General Medicine (RG), Burdwan Medical College and Hospital, Burdwan, West Bengal, India; Department of Neuromedicine (DL, SD, BKR), Bangur Institute of Neurosciences, Kolkata, India; Department of Neurology (JB-L), University Hospital “12 de Octubre”, Madrid, Spain; Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED) (JB-L), Madrid, Spain; and Department of Mediine (JB-L), Complutense University, Madrid, Spain.

Address correspondence to Julián Benito-León, MD, PhD, Deparment of Neurology, University Hospital “12 de Octubre”, Av. de Córdoba km. 5400 Madrid,, Spain; E-mail: [email protected]

Supported by FEDER funds.

The authors report no conflicts of interest.

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