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Article History

Received: 21 April 2020

Accepted: 18 May 2020

First Online: 3 August 2020

Ethics approval and consent to participate

: All participants gave a written informed consent to participate in this study and the ethical committee of the faculty of medicine, Al Azhar University, Assiut, have approved it (No: AUA001005019/09). Date of approval 10 May 2019. This study was approved by the ethical committee of our institution and then retrospectively registered as a clinical trial under the number PACTR202004672785790 on the Pan African Clinical Trial Registry (ExternalRef removed). Date 16 April 2020.

: Not applicable.

: All the authors declare no financial or non-financial competing interests.