Sweileh, Waleed M.
Article History
Received: 6 February 2018
Accepted: 22 June 2018
First Online: 6 August 2018
Ethics approval and consent to participate
: The study did not include any human subjects or human materials, and ethical approval of the study was thus not required based on guidance from the institutional review board of An-Najah National University.
: Not applicable.
: The author declares that he has no competing interests.