Funding for this research was provided by:
Ministry of Higher Education, Malaysia (N/A)
Kaduna state Goverment of Nigeria Scholarship (N/A)
Text and Data Mining valid from 2017-08-01
Received: 27 February 2017
Accepted: 7 July 2017
First Online: 1 August 2017
Ethics approval and consent to participate
: Not applicable.
: Not applicable
: The authors declare that they have no competing interests.