Satish V Khadilkar MD DM DNB FIAN FICP FAMS FRCP (London)Professor and Dean, Bombay Hospital Institute of Medical Sciences, Mumbai, Maharashtra, IndiaGagandeep Singh MD DM (Neurology) FAMS FRCP (London) FIAN FICPProfessor and Head, Department of Neurology, Dayanand Medical College and Hospital Ludhiana, Punjab, India; Honorary Senior Research Fellow, Department of Clinical and Experimental Epilepsy, Institute of Neurology, Queen Square, London, UK