Funding for this research was provided by:
Abadan faculty of medical sciences, Abadan, Iran (98U-603)
Received: 25 November 2020
Accepted: 15 January 2021
First Online: 6 February 2021
Compliance with ethical standards
: None to declare.
: The study was approved by the Research Ethics Committee of the Abadan Faculty of Medical Sciences (Ethical code: IR. ABADANUMS.REC1398.073), Abadan, Iran. Written informed consent was obtained from all the children’s parents. Our manuscript has been already submitted to a pre-print platform (Research Square), providing the DOI (ExternalRef removed) and licensing information.