Received: 17 March 2020
Accepted: 27 January 2021
First Online: 9 February 2021
Ethics approval and consent to participate
: The research was approved by the Sheba Hospital Human Subjects Review Board in accordance with the Helsinki Declaration. Approval was also obtained from the Ministry of Education and from each school’s administration. A consent form was signed by each participant and one of her parents.
: Informed consent was obtained from all individual participants included in this study.
: The authors declare that they have no competing interests.