Ahmad, Bashir
Alsaedi, Ahmed http://orcid.org/0000-0003-3452-8922
Ntouyas, Sotiris K.
Shammakh, Wafa
Funding for this research was provided by:
King Abdulaziz University (RG-25-130-38)
Article History
Received: 16 January 2019
Accepted: 2 July 2019
First Online: 17 July 2019
Competing interests
: The authors declare that they have no competing interests.