aDepartment of Neurology, Amrita Institute of Medical Sciences, Kochi, India

bDepartment of Uro-Neurology, The National Hospital for Neurology and Neurosurgery, Queen Square, University College London NHS Foundation Trust

cDepartment of Brain Repair and Rehabilitation, Queen Square Institute of Neurology, Faculty of Brain Sciences, University College London, London, United Kingdom

Correspondence to Jalesh N. Panicker, Department of Uro-Neurology, The National Hospital for Neurology and Neurosurgery, Queen Square, University College London NHS Foundation Trust, London, United Kingdom WC1N 3BG. E-mail: [email protected]