Mahmoud, Nesreen Fawzy
Hassan, Karima A.
Abdelmajeed, Salwa F.
Moustafa, Ibraheem M.
Silva, Anabela G.
Article History
First Online: 26 November 2019
Compliance with Ethical Standards
:
: Nesreen Fawzy, Karima A. Hassan, Salwa F. Abdelmajeed, Ibraheem M Moustafa, and Anabela G. Silva declare that they have no conflict of interest. However, one of them (AGS) is the author of four of the articles referenced here, two of which were included in this systematic review. To avoid conflict of interest, she was blind in the searching and filtering process and she did not contribute to the quality assessment of those two articles.
: All reported studies with human subjects performed by one of the authors (AGS) have been previously published and complied with all applicable ethical standards.