Text and Data Mining valid from 2019-04-18
Received: 7 December 2018
Accepted: 1 April 2019
First Online: 18 April 2019
Ethics approval and consent to participate
: Not applicable. This study is based on data from Government of India (GoI) and hence is there is no need of ethical approval.
: Author’s agree with the terms and conditions of the publishing house and don’t have any hesitation.
: The authors declare that they have no competing interests.