Farid, Ashraf Mohamed http://orcid.org/0000-0002-8891-5867
ElKheshin, Sherif Elsayed
Article History
Received: 13 October 2019
Accepted: 17 December 2019
First Online: 3 January 2020
Ethics approval and consent to participate
: This study has been approved by the research ethics, Faculty of Medicine, Tanta University (approval code: 33295/8/19), obtained on August, 2019. In addition, being a retrospective study, consents for participation and for publication were not applicable, so the ethics committee waived the consent to participate.
: Not applicable. Figures has no personal information about the patients.
: The authors declare that they have no competing interests.