Received: 17 February 2021
Accepted: 25 May 2021
First Online: 5 June 2021
: This study was approved by the institution review board at An-Najah National University (number 1/2020). At the beginning of the questionnaire an informed written consent was provided. Participants who agreed to participate in the study signed the consent. Participants were also verbally informed by the researcher about the study objectives. All participants were above 16 years old. No incentive or promotion were provided. The study methods have been used according to relevant guidelines and regulations. All data were treated confidentially and used for research purposes only.
: Not applicable.
: The authors declare they have no competing interests.