Dr. Kalyan B. Bhattacharyya is a neurologist at Medica Superspecialty Hospital (MSH) and Institute of Neurosciences Kolkata, Kolkata.Published and presented more than 80 papers in various national and international journals. Invited to talk in the World Federation of Neurology Congress in Vienna in 2013. Talked and chaired sessions in various meetings in London, Seoul, Dublin, Stockholm and Geneva recently, apart from in various cities in India.