Funding for this research was provided by:
King Abdulaziz University (G-252-249-38)
Text and Data Mining valid from 2018-12-07
Received: 3 August 2018
Accepted: 31 October 2018
First Online: 7 December 2018
Compliance with ethical standards
: The study was carried out in accordance with ethical standards in all aspects.
: The authors declare that they have no conflict of interest.