Funding for this research was provided by:
Deanship of Scientific Research/ Jordan University of Science and Technology, Irbid 22110, Jordan (522-2013)
Scientific Research Fund, Ministry of Higher Education and Research, Jordan (SRF 2/3/2009)
Article History
Received: 17 January 2019
Accepted: 17 May 2019
First Online: 27 May 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: The study protocol was approved by the Institutional Review Board (IRB) at Jordan University of Science and Technology (IRB #284/2015). The required permissions were also obtained from the Ministry of Social Development and the Ministry of Education, Jordan. After explaining the objectives of the study, informed written consent was obtained from the parents or guardians for their children to participate. Trial registration: ClinicalTrials.gov Identifier: NCT03526276 ‘retrospectively registered’.
: Informed consent was obtained from all individual participants included in the study.