Text and Data Mining valid from 2019-01-30
Received: 18 October 2018
Accepted: 16 January 2019
First Online: 30 January 2019
Compliance with ethical standards
: The authors report no conflict of interest. The datasets generated for the study are available from the corresponding author on reasonable request.
: A portion of this study was presented as a podium presentation at the 66th Annual Conference of the Neurological Society of India in December, 2017.