Received: 2 March 2020
Accepted: 30 October 2020
First Online: 16 November 2020
Ethics approval and consent to participate
: All subjects involved in the study were invited to participate on a voluntary basis after the study purpose, risk and advantage of participation were clarified. Those who agreed to participate were asked to sign an informed consent document and were assured of their privacy and confidentiality. The approval of the Al-Najah National University Institutional Review Board (IRB), the Scientific Committee and the Palestinian Ministry of Health was acknowledged.
: “Not applicable”.
: “The authors declare that they have no competing interests” in this section.