Updates are available Correction dated 2021-09-24

Article History

Received: 3 June 2021

Revised: 13 August 2021

Accepted: 18 August 2021

First Online: 30 August 2021

Change Date: 24 September 2021

Change Type: Correction

Change Details: A Correction to this paper has been published:

Change Details: https://doi.org/10.1007/s00431-021-04262-1

Declarations

:

: The local ethics committee of the Faculty of Medicine, Tanta University, approved the study. The study is in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments.

: An informed consent was obtained from the parents of all subjects of the study before enrollment.

: All the authors transfer, assign, or otherwise convey all copyright ownership, including any and all rights exclusively to the journal, in the event that such work is published by the journal.

: The authors declare no competing interests.