Received: 21 March 2021
Accepted: 14 June 2021
First Online: 20 July 2021
: This study was approved by the Joint Research Ethics Committee of Medical School and the Hassan II University Hospital (Fez, Morocco). Written information about the nature of the experimental procedures was given to the parents of the patients, who provided the informed consent for participation of their children. All protocol was performed in accordance with the relevant guidelines and regulations/Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.