1 Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, India.
2 Department of Neurology, National Institute of Mental Health and Neurosciences, Bangalore, India.
3 Corresponding author: Ajit Bhalchandra Dahale, MD, Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, India 560 029 (ajitdahale@gmail.com).