Received: 26 December 2018
Accepted: 29 May 2019
First Online: 7 June 2019
Ethics approval and consent to participate
: The study protocol was approved by the Ethics Committee of Tehran University of Medical Sciences (Code: IR. TUMS.REC.1396.3917) and by the Helsinki Ethical Committee in the Gaza Strip (Code: PHRC/HC/288/17). Also, permission was obtained from the General Directorate of Human Resources Development at the Palestinian Ministry of Health to conduct the study. The household’s heads who agreed to participate in the study were asked to sign a written informed consent attached to the questionnaire.
: Not applicable.
: The authors declare that they have no competing interests.