Received: 29 June 2018
Accepted: 14 February 2019
First Online: 27 February 2019
: Study was approved by the Ethical Committee, Department of General Surgery – Faculty of Medicine, Cairo University, Egypt. The approval included the authorization of the 6 patients to endorse the study and <i>to make their data available for future work or publication</i>.
: Both authors arranged to upload the article for publication to the Bulletin of the National Research Centre. They also have got a consent from all patients included in the study for same item. (All were adults).
: The authors declare that they have no competing interests.
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