Chowdhury Debashish, Singh Amit Shankar, Khwaja Geeta Anjum
Department of Neurology, Govind Ballabh Pant Institute of Postgraduate Medical Education and Research, New Delhi, India.
Ann Indian Acad Neurol. 2017 Jan-Mar;20(1):73-74. doi: 10.4103/0972-2327.199905.