Affiliation: | Department of Neurology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India;1Department of Neurology, Post Graduate Institute of Medical Education and Research, Chandigarh, India;2Department of Neurology, Vivekananda Institute of Medical Sciences, Kolkata, India;3Department of Medicine, S.P. Medical College, Bikaner, Rajasthan, India |