2.1. Study design
This was a randomized controlled trial, and parallel group study (allocation ratio1:1). Consolidated Standards of Reporting Trials (CONSORT) statement guidelines were adopted in conducting and reporting the trial. Ethical approval for the study was granted in Jordan by the institutional review board at Philadelphia University. All procedures performed in this study involving human participants were in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.