Received: 3 October 2019
Accepted: 23 March 2021
First Online: 7 April 2021
: This research was approved by the Institutional Review Board at King Abdullah International Medical Research Center. All participating parents signed a consent form prior to enrolment in the study.
: Consent for publication of this study is granted by the authors, Hanan Aljassim and Hoda Jradi.
: The authors declare that they have no competing interests.